Properties of the Number 2163

Two Thousand One Hundred Sixty-Three

Basics

Value: 2162 → 2163 → 2164

Parity: odd

Prime: No

Previous Prime: 2161

Next Prime: 2179

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 103

Divisors: 1, 3, 7, 21, 103, 309, 721, 2163

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001110011

Octal: 4163

Duodecimal: 1303

Hexadecimal: 873

Square: 4678569

Square Root: 46.50806381693394

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

Central polygonal numbers: a(n) = n² - n + 1. A2061

a(n) = ∑_k=1..n n/gcd(n,k). A57660

a(n) = 4·n² - 6·n + 3. A54569

Expansion of ∑_k>=2 x^k*(k+3/2) / ∏_j=1..k (1 - x^j). A318029

Number of chains in power set of n-set. A7047

Denominators of cosecant numbers: -2*(2^2·n-1-1)*Bernoulli(2·n). A1897

Numbers whose square with its last digit deleted is also a square. A31149

Numbers n such that φ(n,x) is a flat cyclotomic polynomial of order three. A117223

Numbers whose binary indices and prime indices have the same sum. A372427

Shortest edge c of (measured by the longest edge) primitive Euler bricks (a, b, c, sqrt(a² + b²), sqrt(b² + c²), sqrt(a² + c²) are integers). A31175