Properties of the Number 31095

Thirty-One Thousand Ninety-Five

Basics

Value: 31094 → 31095 → 31096

Parity: odd

Prime: No

Previous Prime: 31091

Next Prime: 31121

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 691

Divisors: 1, 3, 5, 9, 15, 45, 691, 2073, 3455, 6219

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100101110111

Octal: 74567

Duodecimal: 15BB3

Hexadecimal: 7977

Square: 966899025

Square Root: 176.33774411622713

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) = floor(X/Y) where X = concatenation in decreasing order of (2n)-th even number to (n+1)-th even number and Y = that of first n even numbers in increasing order. A67092

Series reversion of η(-x) - 1. A176025

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n-2), where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, and (a(n)) and (b(n)) are increasing complementary sequences. A295367

Structured pentagonal icositetrahedral numbers (vertex structure 13). A100167

a(n) = 46·n² - 1. A158634

a(0)=0, a(1)=1, a(n) = a(n-1) + (a(n-2) XOR n). A182537

Number of free nonplanar polyenoids with n nodes. A953

Number of (n+3) X 6 binary arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock. A188099

Number of base 25 circular n-digit numbers with adjacent digits differing by 3 or less. A125335

Number of ways to tile a hexagonal strip made up of n equilateral triangles, using diamonds and trapezoids. A374391