Properties of the Number 23309

Twenty-Three Thousand Three Hundred Nine

Basics

Value: 23308 → 23309 → 23310

Parity: odd

Prime: No

Previous Prime: 23297

Next Prime: 23311

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 11 × 13 × 163

Divisors: 1, 11, 13, 143, 163, 1793, 2119, 23309

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101101100001101

Octal: 55415

Duodecimal: 115A5

Hexadecimal: 5b0d

Square: 543309481

Square Root: 152.6728528586533

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

Number of ways 1/n can be expressed as the sum of four distinct unit fractions: 1/n = 1/w + 1/x + 1/y + 1/z satisfying 0 < w < x < y < z. A241883

Numbers k such that 2·k+1, 3·k+2, 4·k+3 and 5·k+4 are primes. A138700

a(n) = n*(n² - 1)/2 - 1. A117560

Lexicographically earliest sequence of distinct nonnegative terms wherein every digit of a(n) is the absolute difference of two adjacent digits in a(n+1). A362335

Array read by antidiagonals, n >= 2, m >= 0: T(n,m) is the smallest ludic number L(k) such that all n-th differences of (L(k), ..., L(k+n+m)) are zero, where L is A003309; T(n,m) = 0 if no such number exists. A350007

Primes that remain prime through 4 iterations of function f(x) = 3x + 8. A23309