Properties of the Number 99931

Ninety-Nine Thousand Nine Hundred Thirty-One

Basics

Value: 99930 → 99931 → 99932

Parity: odd

Prime: No

Previous Prime: 99929

Next Prime: 99961

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 13 × 7687

Divisors: 1, 13, 7687, 99931

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000011001011011

Octal: 303133

Duodecimal: 499B7

Hexadecimal: 1865b

Square: 9986204761

Square Root: 316.1186486115617

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(1) is 4. a(n) is the least semiprime q (A001358) greater than p = a(n-1), such that p/q is a new minimum. A277343

Smallest 4-abundant number (σ(x) > 4x) which is not divisible by any of the first n primes. A358414

Least number k coprime to 2, 3, 5, and 7 such that σ(k)/k >= n. A358419

a(n) = Pell(n) * Pell(n-1) * Pell(n-2) * Pell(n-3) / 120. A99931

Numbers n such that 10ⁿ - 69 is prime. A177866