Properties of the Number 18317

Eighteen Thousand Three Hundred Seventeen

Basics

Value: 18316 → 18317 → 18318

Parity: odd

Prime: No

Previous Prime: 18313

Next Prime: 18329

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 13 × 1409

Divisors: 1, 13, 1409, 18317

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011110001101

Octal: 43615

Duodecimal: A725

Hexadecimal: 478d

Square: 335512489

Square Root: 135.34031180694095

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

The number of regions formed when every pair of n points, placed at the vertices of a regular n-gon, are connected by a circle and where the points lie at the ends of the circle's diameter. A358782

Number of permutations of length n which avoid the patterns 321, 2143, 3124; or avoid the patterns 132, 2314, 4312, etc. A116731

a(n) = floor(sqrt(5·2ⁿ)). A221942

Number of compositions of 7·n into parts 3 and 7. A373909

Expansion of 1 / ((1-x)³ - x⁷). A392544

Number of numbers in row n of the array at A243855. A243856

Greatest integer k such that k/2ⁿ < sqrt(5). A293331

Number of partitions of n satisfying (cn(0,5) = 0 and cn(1,5) = cn(4,5)). A36818

a(n) = 1 + 4·n*(1 + 2·n²)/3. A171272

Number of partitions of n into parts not of the form 11k, 11k+2 or 11k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 4 are greater than 1. A35945