Properties of the Number 31247

Thirty-One Thousand Two Hundred Forty-Seven

Basics

Value: 31246 → 31247 → 31248

Parity: odd

Prime: Yes

Previous Prime: 31237

Next Prime: 31249

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 31247

Divisors: 1, 31247

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101000001111

Octal: 75017

Duodecimal: 160BB

Hexadecimal: 7a0f

Square: 976375009

Square Root: 176.7682098116061

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

Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <= 6 (i.e., when d = 2, 4 or 6) and forming pattern = [2, 4, 6]; short notation = [246] d-pattern. A78847

Primes p such that the polynomial x² + x + p generates only primes for x = 0, ..., 4. A187057

Initial primes of 5 consecutive primes with consecutive gaps 2, 4, 6, 8. A190814

Primes p such that the polynomial x² + x + p generates only primes for x = 1..5. A187058

Prime numbers p such that x² + x + p produces primes for x = 0..5 but not x = 6. A210364

Expansion of exp( ∑_n>=1 σ(6·n)*xⁿ/n ) in powers of x. A283119

Prime numbers n such that n = p1³ + p2³ + p3³, a sum of cubes of 3 distinct prime numbers. A137365

Permutation of natural numbers, a composition of A241909 and A064216: a(n) = A064216(A241909(n)). A243061

Primes that remain prime through 4 iterations of function f(x) = 9x + 10. A23327

Subsequence of A137365 where it is possible to choose p1, p2, p3 so that p1+p2+p3 = prime. A137366