Properties of the Number 31396

Thirty-One Thousand Three Hundred Ninety-Six

Basics

Value: 31395 → 31396 → 31397

Parity: even

Prime: No

Previous Prime: 31393

Next Prime: 31397

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 47 × 167

Divisors: 1, 2, 4, 47, 94, 167, 188, 334, 668, 7849

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101010100100

Octal: 75244

Duodecimal: 16204

Hexadecimal: 7aa4

Square: 985708816

Square Root: 177.1891644542634

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

Truncated square pyramid numbers: a(n) = ∑_{k = n..2·n-1} k². A50410

Number of compositions of n with the same runs-resistance as cuts-resistance. A329864

Array read by antidiagonals: T(n,k) (n>=1, k>=1) = number of ways to select four points from an n X k grid so that they form a convex quadrilateral. A334711

Number of rooted trees with n nodes with every leaf at height 10. A48815

Denominators of continued fraction convergents to sqrt(202). A41375

a(n) = (n⁴ + 46·n³ - 169·n² + 146·n + 24)/24. A143059

Numbers k such that Pell equation x² - k·y² = -1 is soluble. A31396

Denominators of fractions with nontrivial anomalous cancellation, listed with multiplicity if multiple numerators are possible. A291094

a(n) = A368945(A071561(n)). A368609