Properties of the Number -31156

Thirty-One Thousand One Hundred Fifty-Six

Basics

Value: -31157 → -31156 → -31155

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 7789

Divisors: 1, 2, 4, 7789, 15578, 31156

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -111100110110100

Octal: -74664

Duodecimal: -16044

Hexadecimal: -79b4

Square: 970696336

Square Root: 176.5106229097841

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

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A253350

The number of permutations of length n sortable by 3 prefix block transpositions. A228395

Numbers n such that sum of squares of even digits of n equals sum of squares of odd digits of n. A76164

Number of (n+1) X (4+1) 0..1 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A253346

Number of (3+1)X(n+1) 0..1 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A253352

Numbers k such that 211·2^k+1 is prime. A32482

Number of planar n X n X n binary triangular grids symmetric both under 120-degree rotation and reflection with no more than 1 one in any 4 X 4 X 4 subtriangle. A153904