Properties of the Number 81171

Eighty-One Thousand One Hundred Seventy-One

Basics

Value: 81170 → 81171 → 81172

Parity: odd

Prime: No

Previous Prime: 81163

Next Prime: 81173

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 29 × 311

Divisors: 1, 3, 9, 29, 87, 261, 311, 933, 2799, 9019

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011110100010011

Octal: 236423

Duodecimal: 3AB83

Hexadecimal: 13d13

Square: 6588731241

Square Root: 284.90524740692297

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 k such that the period of the continued fraction for sqrt(k) contains exactly 33 ones. A31801

G:=1/product((1-x^3k-2)*(1-x^3k-1)²*(1-x^3k)³,k=1..infinity). A29864

Triangle in which n-th row gives trajectory of n (including n itself) under the map x -> x/2 if·is even, x -> 3x-3 if·is odd, stopping when reaching one of 1, 3, 5, 15, 51. A81171