Properties of the Number 40031

Forty Thousand Thirty-One

Basics

Value: 40030 → 40031 → 40032

Parity: odd

Prime: Yes

Previous Prime: 40013

Next Prime: 40037

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 40031

Divisors: 1, 40031

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110001011111

Octal: 116137

Duodecimal: 1B1BB

Hexadecimal: 9c5f

Square: 1602480961

Square Root: 200.07748499019073

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

List of Ormiston prime pairs. A72274

Numbers whose least quadratic nonresidue (A020649) is 19. A25027

Positions of non-crossing fixed-point-free involutions (encoded by A014486) in A055089, sorted to ascending order. A64640

Numbers n such that (43ⁿ - 1)/42 is prime. A240765

Number of permutations p of [n] such that 0p has a nonincreasing jump sequence. A291685

Least odd number k such that x' = k has n solutions, where x' is the arithmetic derivative (A003415) of x. A189560

Positions of non-crossing fixed-point-free involutions encoded by A014486 in A055089. Permutation of A064640. A64638

Primes where the first digit equals the sum of all the other digits. A156307

Least prime k such that x' = k has n solutions, where x' is the arithmetic derivative (A003415) of x. A189559

Odd numbers n for which 19 is the smallest i (>= 1) with Jacobi symbol J(i,n) getting either a value 0 or -1. A112078