Properties of the Number 18331

Eighteen Thousand Three Hundred Thirty-One

Basics

Value: 18330 → 18331 → 18332

Parity: odd

Prime: No

Previous Prime: 18329

Next Prime: 18341

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 23 × 797

Divisors: 1, 23, 797, 18331

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011110011011

Octal: 43633

Duodecimal: A737

Hexadecimal: 479b

Square: 336025561

Square Root: 135.39202339872168

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

a(n) = (n+1)*(n² +8·n +6)/6. Number of n-dimensional partitions of 4. Number of terms in 4th derivative of a function composed with itself n times. A8778

Semiprimes in A056108. A113527

Theorems from propositional calculus, translated into decimal digits. A101273

A three-dimensional version of the cellular automaton A160118, using cubes. A160119

Positive integers of the form (10·m²+1)/11. A179338

Number of connected multigraphs with n edges and rooted at two indistinguishable vertices whose removal leaves a connected graph. A338999

a(n) = 12·n² + 2·n + 1. A194454

Third Moebius transform of A000219. Number of plane partitions of n whose multiset of rows is aperiodic and whose multiset of columns is also aperiodic and whose parts are relatively prime. A323585

G.f. A(x) satisfies A(x) = (1 + x·A(x)³) * C(x), where C(x) is the g.f. of A000108. A381782

a(n) = floor(n²/3 + n³/2). A390565