Properties of the Number 81383

Eighty-One Thousand Three Hundred Eighty-Three

Basics

Value: 81382 → 81383 → 81384

Parity: odd

Prime: No

Previous Prime: 81373

Next Prime: 81401

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 97 × 839

Divisors: 1, 97, 839, 81383

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110111100111

Octal: 236747

Duodecimal: 3B11B

Hexadecimal: 13de7

Square: 6623192689

Square Root: 285.27705831349283

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 peaks at even level in all nondecreasing Dyck paths of semilength n. A nondecreasing Dyck path is a Dyck path for which the sequence of the altitudes of the valleys is nondecreasing. A121486

Numbers whose base-5 representation has exactly 8 runs. A43608

Least x = a(n) such that number of common prime factors (ignoring multiplicity) of σ(x) = A000203(x) and φ(x) = A000010(x) equals n. A81383