Properties of the Number 31032

Thirty-One Thousand Thirty-Two

Basics

Value: 31031 → 31032 → 31033

Parity: even

Prime: No

Previous Prime: 31019

Next Prime: 31033

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 431

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111100100111000

Octal: 74470

Duodecimal: 15B60

Hexadecimal: 7938

Square: 962985024

Square Root: 176.15901907083838

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = 6ⁿ-5ⁿ+1ⁿ. A155639

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0. A256748

Pentagonal numbers (A000326) which are the sum of 2 other positive pentagonal numbers. A136117

a(n) = n²*(3·n² - 1)/2. A260810

Triangle T(n,k), read by rows: coefficients for numerical integration near a singularity (n >= 0 and 0 <= k <= n). A324124

Improved version of A002686; secondary main diagonal of A324124. A328885

Coefficients for numerical integration. A2686

Pentagonal numbers that are abundant. A379264

Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section. A287040

a(1)=0, a(2)=1; for n>2, a(n) = C(n,2)*(1+a(n-2)). A126725