Properties of the Number -31685

Thirty-One Thousand Six Hundred Eighty-Five

Basics

Value: -31686 → -31685 → -31684

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 6337

Divisors: 1, 5, 6337, 31685

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -111101111000101

Octal: -75705

Duodecimal: -16405

Hexadecimal: -7bc5

Square: 1003939225

Square Root: 178.0028089666003

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

G.f.: ∑_n>=0 n! * xⁿ * ∏_k=1..n (1 + k·x) / (1 + k·x + k²*x²). A208237

Number of labeled directed multigraphs with n arcs and with no vertex of indegree 0. A122420

a(n) = 4·prime(n)²+1. A60429

Number of maximal matchings in the n-Cameron graph. A387588

Number of non-intersecting cycle systems in a particular directed graph. A114300