Properties of the Number 81235

Eighty-One Thousand Two Hundred Thirty-Five

Basics

Value: 81234 → 81235 → 81236

Parity: odd

Prime: No

Previous Prime: 81233

Next Prime: 81239

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 7 × 11 × 211

Divisors: 1, 5, 7, 11, 35, 55, 77, 211, 385, 1055

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110101010011

Octal: 236523

Duodecimal: 3B017

Hexadecimal: 13d53

Square: 6599125225

Square Root: 285.01754331970517

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

Numerator of Bernoulli(n, -5/6). A158300

a(n) = floor( n*(n-1)*(n-2)*(n-3)/27 ). A11937

Number of set partitions of [n] with minimal block length multiplicity equal to three. A271763

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 57. A31735

Numerator of Bernoulli(n, -1/9). A158809

a(n) = (n - 1)*n*(2·n² + 4·n - 1)/6. A330700

Smallest prime starting a sequence of 2n consecutive primes with symmetrical gaps about the center. A81235