Properties of the Number 31105

Thirty-One Thousand One Hundred Five

Basics

Value: 31104 → 31105 → 31106

Parity: odd

Prime: No

Previous Prime: 31091

Next Prime: 31121

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 6221

Divisors: 1, 5, 6221, 31105

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111100110000001

Octal: 74601

Duodecimal: 16001

Hexadecimal: 7981

Square: 967521025

Square Root: 176.36609651517495

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

Pierpont semiprimes: semiprimes of the form (2^K)*(3^L)+1. A113432

Numbers n for which there are exactly six k such that n = k + (product of nonzero digits of k). A96927

Number of integer partitions of n whose parts cannot be arranged into a (not necessarily square) matrix with equal row-sums and equal column-sums. A323348

a(n) = 24·n² + 1. A158547

a(n) = 54·n² + 1. A158646

One half of the even Markoff nunbers. A388289

a(n) = 4·6ⁿ+1. A199319

Sums s of positive exponents such that no prime of the form 2^j*3^k + 1 with j + k = s exists. A336772

Position of n-th 4 in A031100. A31105