Properties of the Number 18131

Eighteen Thousand One Hundred Thirty-One

Basics

Value: 18130 → 18131 → 18132

Parity: odd

Prime: Yes

Previous Prime: 18127

Next Prime: 18133

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 18131

Divisors: 1, 18131

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011011010011

Octal: 43323

Duodecimal: A5AB

Hexadecimal: 46d3

Square: 328733161

Square Root: 134.65140177510222

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

Primes p with p + 2 and prime(p) + 2 both prime. A236458

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250632

Smallest prime p having n different cycles in decimal expansions of k/p, k=1..p-1. A54471

Sum of the smallest parts of the partitions of n into 10 parts. A326589

Primes p such that (2·p)³ + 1 is a semiprime. A237038

Primes having only {1, 3, 8} as digits. A385778

Denominators of convergents to 1 + 2/(3 + 4/(5 + 6/(7 + ...))). A113013

Prime-generating polynomial: a(n) = 16·n² - 300·n + 1447. A181973

Square-chain primes (including square-loop primes). A108659

Number of partitions of n in which any two parts differ by at most 10. A218512