Properties of the Number 31018

Thirty-One Thousand Eighteen

Basics

Value: 31017 → 31018 → 31019

Parity: even

Prime: No

Previous Prime: 31013

Next Prime: 31019

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 13 × 1193

Divisors: 1, 2, 13, 26, 1193, 2386, 15509, 31018

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111100100101010

Octal: 74452

Duodecimal: 15B4A

Hexadecimal: 792a

Square: 962116324

Square Root: 176.11927776367924

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 lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any element at a city block distance of two, and containing the value n(n+1)/2-2. A212031

Number of inequivalent ways of placing 2 nonattacking rooks on n X n board up to rotations and reflections of the board. A307304

a(n) = A115004(n) - A334701(n). A335179

Write 2n-1 in base 7 and juxtapose. A31018