Properties of the Number 31288

Thirty-One Thousand Two Hundred Eighty-Eight

Basics

Value: 31287 → 31288 → 31289

Parity: even

Prime: No

Previous Prime: 31277

Next Prime: 31307

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 3911

Divisors: 1, 2, 4, 8, 3911, 7822, 15644, 31288

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101000111000

Octal: 75070

Duodecimal: 16134

Hexadecimal: 7a38

Square: 978938944

Square Root: 176.8841428732378

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

Number of twice-partitions of type (Q,P,Q) and weight n. A279790

a(n) = ∑_i=0..n 3ⁱ*i!. A112370

Number of binary strings of length n with equal numbers of 00100 and 11011 substrings. A164243

Number of nX3 0..1 arrays with every element unequal to 0, 1, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A318540

Numbers k which are the product of a cube greater than 1 and a prime, and where k-1 and k-2 are semiprimes. A350284

Position of n-th 1 in A007376. A31288

Number of (n+1)X7 0..1 arrays with the number of equal 2X2 subblock diagonal pairs and equal antidiagonal pairs differing from each horizontal or vertical neighbor, and new values 0..1 introduced in row major order. A205224