Properties of the Number 31407

Thirty-One Thousand Four Hundred Seven

Basics

Value: 31406 → 31407 → 31408

Parity: odd

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 19 ² × 29

Divisors: 1, 3, 19, 29, 57, 87, 361, 551, 1083, 1653

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101010101111

Octal: 75257

Duodecimal: 16213

Hexadecimal: 7aaf

Square: 986399649

Square Root: 177.2202020086875

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

Numbers D such that D² = A³ + B⁴ + C⁵ has more than one solution in positive integers (A, B, C). A256603

Odd numbers k such that A173557(k) = A173557(σ(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and σ is the sum of divisors function. A387159

Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 1 skipped prime. A50768

Numbers k such that the continued fraction for sqrt(k) has even period 2·m and the m-th term of the periodic part is 4. A31407

Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3 X 3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7. A252162