Properties of the Number 31385

Thirty-One Thousand Three Hundred Eighty-Five

Basics

Value: 31384 → 31385 → 31386

Parity: odd

Prime: No

Previous Prime: 31379

Next Prime: 31387

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 6277

Divisors: 1, 5, 6277, 31385

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101010011001

Octal: 75231

Duodecimal: 161B5

Hexadecimal: 7a99

Square: 985018225

Square Root: 177.15812146215595

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 length times maximum is a multiple of n. A326849

Number of strict compositions of n whose non-adjacent parts are strictly decreasing. A333150

Fibonacci sequence beginning 14, 11. A206605

Sum of the 2nd smallest parts of all the partitions of n (2nd smallest part is defined to be 0 when the partition does not have at least 2 distinct parts). A265248

Numbers k whose decimal representation can be split in three parts which can be used as seeds for a tribonacci-like sequence containing k itself. A383230

Decimal part of a(n)^1/4 starts with reversal of its integer part: first term of runs. A34310

Poincaré series for invariant polynomial functions on the space of binary forms of degree 14. A293939

a(n) = prime(4·n-3). A31385

Number of nX5 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s. A297730