Properties of the Number 11831

Eleven Thousand Eight Hundred Thirty-One

Basics

Value: 11830 → 11831 → 11832

Parity: odd

Prime: Yes

Previous Prime: 11827

Next Prime: 11833

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 11831

Divisors: 1, 11831

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111000110111

Octal: 27067

Duodecimal: 6A1B

Hexadecimal: 2e37

Square: 139972561

Square Root: 108.77040038539897

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

Expansion of ∏_k>=1 (1 + x^2·k-1)^2·k-1. A262736

Expansion of ∏_k>=1 (1 - x^2·k-1)^2·k-1. A285069

Primes having only {1, 3, 8} as digits. A385778

Subset of Sophie Germain primes generated by an iterative process starting from 11. A145918

Primes p for which the period length of 1/p is a perfect power, A001597. A128948

Primes congruent to 28 mod 37. A142137

Least odd number k such that x' = k has n solutions, where x' is the arithmetic derivative (A003415) of x. A189560

Numbers n such that φ(reverse(n)) = σ(n). A70835

Sum of the reverses of the first n primes. A71602

a(n) = 338·n + 1. A158000