Properties of the Number 31047

Thirty-One Thousand Forty-Seven

Basics

Value: 31046 → 31047 → 31048

Parity: odd

Prime: No

Previous Prime: 31039

Next Prime: 31051

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 79 × 131

Divisors: 1, 3, 79, 131, 237, 393, 10349, 31047

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100101000111

Octal: 74507

Duodecimal: 15B73

Hexadecimal: 7947

Square: 963916209

Square Root: 176.20158909612593

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

Coefficients of numerator of recursively defined rational function: p(x,3)=x*(x² + 8·x + 1)/(1 - x)⁴; p(x, n) = 2·x*D[p(x, n - 1), x] - p(x,n-2). A166346

On a spirally numbered square grid, with labels starting at 1, this is the number of steps that an (n,n+1) leaper makes before getting trapped, or -1 if it never gets trapped. A343178

Numerators of continued fraction convergents to sqrt(881). A42702

Number of nondecreasing arrangements of 7 numbers x(i) in -(n+5)..(n+5) with the sum of sign(x(i))*2^|x(i)| zero. A187991

Position of n-th 1 in A031045. A31047