Properties of the Number 31297

Thirty-One Thousand Two Hundred Ninety-Seven

Basics

Value: 31296 → 31297 → 31298

Parity: odd

Prime: No

Previous Prime: 31277

Next Prime: 31307

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 17 × 263

Divisors: 1, 7, 17, 119, 263, 1841, 4471, 31297

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101001000001

Octal: 75101

Duodecimal: 16141

Hexadecimal: 7a41

Square: 979502209

Square Root: 176.90958142508845

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

Nonnegative values·of solutions (x, y) to the Diophantine equation x² + (x+263)² = y². A207058

Triangle read by rows: T(n,k) is the number of secondary structures of size n having k stacks of length 3. A202843

Number of inequivalent (mod D₃) ways to place 3 points on a triangular grid of side n so that they are not vertices of an equilateral triangle with sides parallel to the grid. A243208

G.f.: exp( ∑_n>=1 (∑_d∣n d·x^d)ⁿ/n ). A192860

Binomial transform of (1,0,1,0,1,0,2,0,2,0,2,0,...). A84636

Numbers n such that 4·10ⁿ + R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102981

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 577", based on the 5-celled von Neumann neighborhood. A273024

Sum of digits in n-th term of A022482. A22487

Numbers k such that 89·2^k+1 is prime. A32394

Antidiagonal triangle sequence based on recursion: f(n,a)=a·n*f(n-1,a)+f(n-2,a). A173003