Properties of the Number 31369

Thirty-One Thousand Three Hundred Sixty-Nine

Basics

Value: 31368 → 31369 → 31370

Parity: odd

Prime: No

Previous Prime: 31357

Next Prime: 31379

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 13 × 19 × 127

Divisors: 1, 13, 19, 127, 247, 1651, 2413, 31369

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101010001001

Octal: 75211

Duodecimal: 161A1

Hexadecimal: 7a89

Square: 984014161

Square Root: 177.11295830627412

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

Expansion of ψ(x⁴) / φ(x) in powers of·where φ(), ψ() are Ramanujan θ functions. A210063

Number of partitions of n into parts not congruent to 0, 2, 12, 14, 16, 18, 20, 30 (mod 32). A115671

Expansion of ψ(x⁴) / φ(-x) in powers of·where φ(), ψ() are Ramanujan θ functions. A187154

Numerators of continued fraction convergents to sqrt(461). A41878

Partitions of n into parts not congruent to 0, +-4, +-6, +-10, 16 (mod 32). A208856

Consider a number n with m decimal digits, m>9. The sequence lists the numbers n such that the prefix of length m-1 and the suffix of length m-1 are both perfect squares. A244283

Quasi-Carmichael numbers to base 4: squarefree composites n such that (n,2·3) = 1 and prime p∣n ==> p-4∣n-4. A29559

Numbers whose second digit is not zero and such that removing either the first or last digit leaves a square number. A343855

Numbers n such that n·2²²⁸¹ - 1 is prime. A265504

a(n) = prime(3n-1). A31369