Properties of the Number 31255

Thirty-One Thousand Two Hundred Fifty-Five

Basics

Value: 31254 → 31255 → 31256

Parity: odd

Prime: No

Previous Prime: 31253

Next Prime: 31259

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 7 × 19 × 47

Divisors: 1, 5, 7, 19, 35, 47, 95, 133, 235, 329

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101000010111

Octal: 75027

Duodecimal: 16107

Hexadecimal: 7a17

Square: 976875025

Square Root: 176.79083686662042

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

4-dimensional figurate numbers: a(n) = (5·n-1)*binomial(n+2,3)/4. A2418

a(n) = floor((n + 1/2)³). A219085

Numbers n for which there are exactly six k such that n = k + (product of nonzero digits of k). A96927

Triangle read by rows: T(n,k) is the number of secondary structures of size n having k stacks of length 3. A202843

a(n) = n·p(n)-spt(n) (= n·A000041(n) - A092269(n)). A220907

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 315", based on the 5-celled von Neumann neighborhood. A281045

Terms of A349937 that are not divisible by 3: numbers k > 1 not divisible by 2 or 3 such that A309906(k-1) < A309906(k) > A309906(k+1). A349941

[ (3rd elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+2 positive integers congruent to 1 mod 4}. A24386

Terms of A050530 with four prime divisors. A53340

a(n) = binomial(floor(n/2),4) + (ceiling(n/2)-3)*binomial(floor(n/2),3). A234277