Properties of the Number 81117

Eighty-One Thousand One Hundred Seventeen

Basics

Value: 81116 → 81117 → 81118

Parity: odd

Prime: No

Previous Prime: 81101

Next Prime: 81119

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 9013

Divisors: 1, 3, 9, 9013, 27039, 81117

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110011011101

Octal: 236335

Duodecimal: 3AB39

Hexadecimal: 13cdd

Square: 6579967689

Square Root: 284.8104632909402

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

Differences of Beatty sequence for cube root of 2. A81117

Indices of primes in sequence defined by A(0) = 87, A(n) = 10·A(n-1) - 53 for n > 0. A101059

Numbers n such that 8·10ⁿ + R_n + 6 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103072