Properties of the Number 81118

Eighty-One Thousand One Hundred Eighteen

Basics

Value: 81117 → 81118 → 81119

Parity: even

Prime: No

Previous Prime: 81101

Next Prime: 81119

Digit Sum: 19

Digital Root: 1

Palindrome: Yes

Factorization: 2 × 40559

Divisors: 1, 2, 40559, 81118

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110011011110

Octal: 236336

Duodecimal: 3AB3A

Hexadecimal: 13cde

Square: 6580129924

Square Root: 284.8122188390098

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

Numbers with mirror symmetry about middle. A6072

Base 10 palindromes that start with 8. A43043

Numbers n such that for every k = 1, 2, ..., A305706(n)-1, it is possible to insert plus signs into the decimal representation of n^k to make sum equal n. A305707

Triangle of first n numbers per row having exactly n 1's in binary representation. A81118