Properties of the Number 31160

Thirty-One Thousand One Hundred Sixty

Basics

Value: 31159 → 31160 → 31161

Parity: even

Prime: No

Previous Prime: 31159

Next Prime: 31177

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 5 × 19 × 41

Divisors: 1, 2, 4, 5, 8, 10, 19, 20, 38, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100110111000

Octal: 74670

Duodecimal: 16048

Hexadecimal: 79b8

Square: 970945600

Square Root: 176.52195330892982

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

Row sums of triangle A105632. A105633

Number of n-step walks on square lattice in the first quadrant which finish at distance n-3 from the x-axis. A5564

Triangle read by rows: T(n,k) = the number of Dyck paths of semilength n with k UDUU's, 0 <= k <= floor((n-1)/2). A116424

Let p = A002145(n) be the n-th prime of the form 4k+3, then a(n) is the smallest number such that p is the smallest prime of the form 4k+3 for which 4·a(n)+2-p is prime. A217696

Expansion of ∏_k>=1 (1 + x^k) * (1 + x^2·k) * (1 + x^3·k) * (1 + x^4·k) / ((1 - x^k) * (1 - x^2·k) * (1 - x^3·k) * (1 - x^4·k)). A327049

E.g.f. A(x) satisfies A(x) = exp( 2·x * A(x)^5/2 / (1 - x·A(x)) ). A372165

Number of fixed polybends with n cells. A392391

Indices of records in A045537. A373942

a(n) = 19·n*(n+1). A173309

Twin lucky numbers (middle terms). A31160