Properties of the Number 31182

Thirty-One Thousand One Hundred Eighty-Two

Basics

Value: 31181 → 31182 → 31183

Parity: even

Prime: No

Previous Prime: 31181

Next Prime: 31183

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5197

Divisors: 1, 2, 3, 6, 5197, 10394, 15591, 31182

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100111001110

Octal: 74716

Duodecimal: 16066

Hexadecimal: 79ce

Square: 972317124

Square Root: 176.58425750898635

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

Coefficient of·in the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192951

a(n) = A000041(n) - A032741(n). A167934

Triangle read by rows: T(n,k) is the number of alternating (i.e., down-up) permutations of {1,2,...,n} having k fixed points (n >= 0, 0 <= k <= ceiling(n/2)). A162979

Sum of pyramid weights of all dispersed Dyck paths of length n (i.e., of all Motzkin paths of length n with no (1,0) steps at positive heights). A191319

Numbers whose natural logarithm, in base 10, starts with 10 distinct digits. A113509

Periods of sum of fourth powers of digits iterated until the sequence becomes periodic. A31182