Properties of the Number 90731

Ninety Thousand Seven Hundred Thirty-One

Basics

Value: 90730 → 90731 → 90732

Parity: odd

Prime: Yes

Previous Prime: 90709

Next Prime: 90749

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 90731

Divisors: 1, 90731

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10110001001101011

Octal: 261153

Duodecimal: 4460B

Hexadecimal: 1626b

Square: 8232114361

Square Root: 301.2158694358582

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) = ∑_j=1..n ∑_k=1..n φ(j·k). A372633

a(n) = 23a(n-1) - a(n-2), starting with a(0) = 2 and a(1) = 23. A90731