Properties of the Number 81211

Eighty-One Thousand Two Hundred Eleven

Basics

Value: 81210 → 81211 → 81212

Parity: odd

Prime: No

Previous Prime: 81203

Next Prime: 81223

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 13 × 6247

Divisors: 1, 13, 6247, 81211

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110100111011

Octal: 236473

Duodecimal: 3ABB7

Hexadecimal: 13d3b

Square: 6595226521

Square Root: 284.9754375380447

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(n) = A081210(A081210(n)). A81211

Numbers k such that (product of digits of k) + 1 and (product of digits of k)² + 1 are both prime. A245017