Properties of the Number 31186

Thirty-One Thousand One Hundred Eighty-Six

Basics

Value: 31185 → 31186 → 31187

Parity: even

Prime: No

Previous Prime: 31183

Next Prime: 31189

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 31 × 503

Divisors: 1, 2, 31, 62, 503, 1006, 15593, 31186

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100111010010

Octal: 74722

Duodecimal: 1606A

Hexadecimal: 79d2

Square: 972566596

Square Root: 176.59558318372518

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

a(n) is the concatenation of n and 6n. A9440

a(n) = 1 + (number of partitions of n, n>0). A52810

Diagonal in array of n-gonal numbers A081422. A81438

a(n)=2·5ⁿ-2ⁿ. A83421

Number of triangular n X n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any neighbor, and containing the value n(n+1)/2-2. A211899

Number of n X 2 -2..2 arrays of 2 X 2 subblock diagonal sums minus antidiagonal sums for some (n+1) X 3 binary array with rows and columns of the latter in lexicographically nondecreasing order. A227056

Numbers n such that n·2²²⁰³ - 1 is prime. A265503

Number of walks within N² (the first quadrant of Z²) starting and ending at (0,0) and consisting of n steps taken from {(-1, 0), (-1, 1), (0, -1), (0, 1), (1, 0)}. A151363

Count of propositional theorems up to 10ⁿ in Richard C. Schroeppel's Goedelization of A101273. A166746

Periods of sum of 5th powers of digits iterated until the sequence becomes periodic. A31186