Properties of the Number 31130

Thirty-One Thousand One Hundred Thirty

Basics

Value: 31129 → 31130 → 31131

Parity: even

Prime: No

Previous Prime: 31123

Next Prime: 31139

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 11 × 283

Divisors: 1, 2, 5, 10, 11, 22, 55, 110, 283, 566

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100110011010

Octal: 74632

Duodecimal: 16022

Hexadecimal: 799a

Square: 969076900

Square Root: 176.43695757975425

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

Constant term of the reduction of n-th Fibonacci polynomial by x² -> x+1. (See Comments.) A192232

Dates after Jan 01 00 in chronological order which are palindromic when they are written according to the format MMDDYY (American standard, short). Leading zeros of the terms are suppressed. A210895

Expansion of (f(-x⁵) / f(-x))² in powers of·where f() is a Ramanujan θ function. A263002

Denominators of continued fraction convergents to sqrt(790). A42523

G.f. satisfies: A(x) = 1 + x·A(x) * [d/dx x/A(x)²]. A208975

Dates after Jan 01 00 in chronological order which are palindromic when they are written in the format DD.MM.YY. The terms are listed as numbers (without the dots). Leading zeros of the terms are suppressed. A210888

Row sums of A286781. A286794

Numbers with decimal expansion d₁, ..., d_w such that for any k in 1..w there is some m in 1..w such that d_k = d_m = abs(k - m). A336880

a(n) = ∑_k=1..n floor(n/(2·k-1))³. A350144

Number of bits necessary to represent u(n) in binary, where u is the Lucas-Lehmer sequence: u(0) = 100 (in binary); for n>0, u(n) = u(n-1)² - 2. A227615