Properties of the Number -31138

Thirty-One Thousand One Hundred Thirty-Eight

Basics

Value: -31139 → -31138 → -31137

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 15569

Divisors: 1, 2, 15569, 31138

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -111100110100010

Octal: -74642

Duodecimal: -1602A

Hexadecimal: -79a2

Square: 969575044

Square Root: 176.459627110566

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 nonempty subsets of {1,2,3,...,n} whose elements have an integer average. A51293

Total sum of even parts in the last section of the set of partitions of n. A206436

The number of primes between two consecutive Mersenne primes. A176559

a(n) = ∑_k=0..n binomial(n,k) * binomial(4·n+3·k,k). A387432

Minimal peaks in digital expansions of π: positions of peaks equal to 1. A105275

Number of (n+2) X 3 binary arrays avoiding patterns 001 and 110 in rows, columns and nw-to-se diagonals. A202440

Numbers n such that σ(n) divides ∑_k=1..n τ(k), where τ(k) is the number of divisors of k (A000005) and σ(n) is the sum of divisors of n (A000203). A182169