31239 (number)
31,239 (thirtyone thousand two hundred thirtynine) is an odd fivedigits composite number following 31238 and preceding 31240. In scientific notation, it is written as 3.1239 × 10^{4}. The sum of its digits is 18. It has a total of 5 prime factors and 16 positive divisors. There are 19,008 positive integers (up to 31239) that are relatively prime to 31239.
Basic properties
 Is Prime? No
 Number parity Odd
 Number length 5
 Sum of Digits 18
 Digital Root 9
Name
Short name  31 thousand 239 

Full name  thirtyone thousand two hundred thirtynine 
Notation
Scientific notation  3.1239 × 10^{4} 

Engineering notation  31.239 × 10^{3} 
Prime Factorization of 31239
Prime Factorization 3^{3} × 13 × 89
Composite numberω(n)  Distinct Factors  3  Total number of distinct prime factors 

Ω(n)  Total Factors  5  Total number of prime factors 
rad(n)  Radical  3471  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  0  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 31,239 is 3^{3} × 13 × 89. Since it has a total of 5 prime factors, 31,239 is a composite number.
Divisors of 31239
16 divisors
τ(n)  Total Divisors  16  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  50400  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  19161  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  3150  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  176.74557985987  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  9.9171428571429  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 31,239 can be divided by 16 positive divisors (out of which 0 are even, and 16 are odd). The sum of these divisors (counting 31,239) is 50,400, the average is 3,150.
Other Arithmetic Functions (n = 31239)
φ(n)  Euler Totient  19008  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  792  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 3368  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 19,008 positive integers (less than 31,239) that are coprime with 31,239. And there are approximately 3,368 prime numbers less than or equal to 31,239.
Divisibility of 31239
m  2  3  4  5  6  7  8  9 

n mod m  1  0  3  4  3  5  7  0 
The number 31,239 is divisible by 3 and 9.
Classification of 31239
By Arithmetic functions
 Arithmetic
 Deficient
Expressible via specific sums
 Polite
Base conversion (31239)
Base  System  Value 

2  Binary  111101000000111 
3  Ternary  1120212000 
4  Quaternary  13220013 
5  Quinary  1444424 
6  Senary  400343 
8  Octal  75007 
10  Decimal  31239 
12  Duodecimal  160b3 
16  Hexadecimal  7a07 
20  Vigesimal  3i1j 
36  Base36  o3r 
Basic calculations (n = 31239)
Multiplication
n×yn×2  62478 

n×3  93717 
n×4  124956 
n×5  156195 
Division
n÷yn÷2  15619.500 

n÷3  10413.000 
n÷4  7809.750 
n÷5  6247.800 
Exponentiation
n^{y}n^{2}  975875121 

n^{3}  30485362904919 
n^{4}  952332251786764641 
n^{5}  29749907213566740620199 
Nth Root
^{y}√n^{2}√n  176.74557985987 

^{3}√n  31.494330045237 
^{4}√n  13.29456956279 
^{5}√n  7.9239080013354 
31239 as geometric shapes
Circle
Radius = nDiameter  62478 

Circumference  196280.42581098 
Area  3065802110.9547 
Sphere
Radius = nVolume  1.2769678952548E+14 

Surface area  12263208443.819 
Circumference  196280.42581098 
Square
Length = nPerimeter  124956 

Area  975875121 
Diagonal  44178.617474973 
Cube
Length = nSurface area  5855250726 

Volume  30485362904919 
Space diagonal  54107.535177644 
Equilateral Triangle
Length = nPerimeter  93717 

Area  422566322.85361 
Altitude  27053.767588822 
Triangular Pyramid
Length = nSurface area  1690265291.4144 

Volume  3592734472833.5 
Height  25506.536691601 
Cryptographic Hash Functions
md5  1297bcaf6f829c2afe9cae03f1975683 

sha1  e0920eb37b5a396be65ba422e05f95113a8c71ed 
sha256  598444848fdc97026816576eea3511a5e7fa5c12451fddf00e285f88c529f323 
sha512  ac50721cf62b0828cc77149fadc26d1f59eb8e7bd8d7bf884ceb16aa60b5ad88f7482a726159e86dc9500d6f18cd796ec1cc96cd99958d0f308a7de25e836536 
ripemd160  45dddd0f99288d38066a957ddaa436618423bdb3 