Properties of the Number 31670

Thirty-One Thousand Six Hundred Seventy

Basics

Value: 31669 → 31670 → 31671

Parity: even

Prime: No

Previous Prime: 31667

Next Prime: 31687

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 3167

Divisors: 1, 2, 5, 10, 3167, 6334, 15835, 31670

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111101110110110

Octal: 75666

Duodecimal: 163B2

Hexadecimal: 7bb6

Square: 1002988900

Square Root: 177.9606698121807

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

Number of permutations of [n] in which the length of every increasing run is 0 or 1 (mod 3). A322251

G.f.: ∏_m>0 (1+x^m+2!*x^2·m). A293204

Numbers k such that φ(k) + φ(k+1) = k+2. A67797

Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 0 1 vertically. A208038

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 82. A31670