Properties of the Number 31425

Thirty-One Thousand Four Hundred Twenty-Five

Basics

Value: 31424 → 31425 → 31426

Parity: odd

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 419

Divisors: 1, 3, 5, 15, 25, 75, 419, 1257, 2095, 6285

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101011000001

Octal: 75301

Duodecimal: 16229

Hexadecimal: 7ac1

Square: 987530625

Square Root: 177.27097901235837

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

Smallest number at distance 2n from nearest prime. A51728

Smallest number at distance n from nearest prime. A51652

Greatest number m such that the fractional part of (π-2)^A153720(n) >= 1-(1/m). A153724

Numbers k such that 2^k + 35 is prime. A220077

a(n) is the smallest number for which the prime distance A051699 is equal to n. A77019

Discriminants of totally real cubic fields with 3 associated nonconjugate fields. A329787

List of André permutations of the first kind. A278982

Array read by rows in which the n-th row contains the multiples of n in increasing order using all the digits of first n numbers. A78189

Smallest number at distance 2n from nearest prime (variant 2). A132860

Least positive k such that the distance from k to closest prime = n. A79582