Properties of the Number 80391

Eighty Thousand Three Hundred Ninety-One

Basics

Value: 80390 → 80391 → 80392

Parity: odd

Prime: No

Previous Prime: 80387

Next Prime: 80407

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 127 × 211

Divisors: 1, 3, 127, 211, 381, 633, 26797, 80391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101000000111

Octal: 235007

Duodecimal: 3A633

Hexadecimal: 13a07

Square: 6462712881

Square Root: 283.53306685464395

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

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order. A204056

Poincaré series [or Poincare series] of Lie algebra associated with a certain braid group. A7993

Number of (n+2)X3 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order. A204049

Number of (n+2)X5 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order. A204051

Number of integers among the following n+1 quotients: A001405(n)/A001405(k), k=0,..,n. Number of values k for which the n-th central binomial coefficient is divisible by the k-th central binomial coefficient for 0<=k=n. A80391