Properties of the Number 31025

Thirty-One Thousand Twenty-Five

Basics

Value: 31024 → 31025 → 31026

Parity: odd

Prime: No

Previous Prime: 31019

Next Prime: 31033

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 17 × 73

Divisors: 1, 5, 17, 25, 73, 85, 365, 425, 1241, 1825

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100100110001

Octal: 74461

Duodecimal: 15B55

Hexadecimal: 7931

Square: 962550625

Square Root: 176.13914953808538

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

Numbers m that are the hypotenuse of exactly 22 distinct integer-sided right triangles, i.e., m² can be written as a sum of two squares in 22 ways. A97103

a(n) is the number of integers m which take n steps to reach 1 in '3x+1' problem. A5186

Numbers n such that the decimal number concat(7,n) is a square. A273362

Number of isomorphism classes of nanocones with 5 pentagons and a symmetric boundary of length n. A198086

Numbers that are the sum of 2 nonzero squares in 6 or more ways. A25297

Numbers that are the sum of 2 distinct nonzero squares in 5 or more ways. A25315

Numbers that are the sum of 2 distinct nonzero squares in 6 or more ways. A25316

Numbers that are the sum of 2 nonzero squares in exactly 6 ways. A25289

Numbers that are the sum of 2 distinct nonzero squares in exactly 6 ways. A25307

Sum of determinants of 2nd order principal minors of powers of the matrix ((1,1,0,0),(1,0,1,0),(1,0,0,1),(1,0,0,0)). A74193