Properties of the Number 31458

Thirty-One Thousand Four Hundred Fifty-Eight

Basics

Value: 31457 → 31458 → 31459

Parity: even

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 7 ² × 107

Divisors: 1, 2, 3, 6, 7, 14, 21, 42, 49, 98

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101011100010

Octal: 75342

Duodecimal: 16256

Hexadecimal: 7ae2

Square: 989605764

Square Root: 177.36403243047897

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

Triangle T(n,k) = total of number at last index for all set partitions of n into k parts. A120095

Indices of primes in A000219. A285216

<h[d+1,d-1],s[d,d]*s[d,d]*s[d,d]> where h[d+1,d-1] is a homogeneous symmetric function, s[d,d] is a Schur function indexed by two parts, * represents the Kronecker product and <, > is the standard scalar product on symmetric functions. A115376

Numbers k for which there are no prime numbers in the range (k-4·sqrt(sqrt(k)), k]. A192320

Numbers k such that both the k-th and (k+1)-th primes have the same sum of digits squared but different sets of digits. A109183

Numbers whose base-3 representation has 2 fewer 0's than 2's. A31458

Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with no occupancy greater than 2. A221298