Properties of the Number -81310

Eighty-One Thousand Three Hundred Ten

Basics

Value: -81311 → -81310 → -81309

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 47 × 173

Divisors: 1, 2, 5, 10, 47, 94, 173, 235, 346, 470

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -10011110110011110

Octal: -236636

Duodecimal: -3B07A

Hexadecimal: -13d9e

Square: 6611316100

Square Root: 285.14908381406383

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 k and k² use only the digits 0, 1, 3, 6 and 8. A136849

a(n) = least number not of form [ (a²/n) ] + [ (b²)/n ]. A36575

Triangle read by rows: T(n,k) is the number of labeled forests of rooted Greg hypertrees with n white vertices and weight k, 0 <= k < n. A370948