Properties of the Number 91013

Ninety-One Thousand Thirteen

Basics

Value: 91012 → 91013 → 91014

Parity: odd

Prime: No

Previous Prime: 91009

Next Prime: 91019

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 13 × 7001

Divisors: 1, 13, 7001, 91013

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001110000101

Octal: 261605

Duodecimal: 44805

Hexadecimal: 16385

Square: 8283366169

Square Root: 301.6836091006603

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 integer partitions of n whose run-lengths are not unimodal. A332281

For each permutation of {1,2,...,n} one or more integers might not be part of any longest increasing subsequence (LIS) of that permutation. The sequence lists the number of permutations for which ceiling(n/2) is not part of any LIS. For example, if n=4, 2 is not in any LIS of the two permutations (1342) and (3421). A168502

Numerator of Hermite(n, 13/14). A159512

Antiharmonic numbers using anti-divisors: numbers n such that σ*(n) divides σ*_2(n), where σ*(n) is the sum of anti-divisors of n and σ*_2(n) the sum of squares of anti-divisors of n. A192286

Numbers having more than one divisor d such that for some·also d-x and d+x are divisors. A91013