Properties of the Number -1723

Seven Hundred Twenty-Three

Basics

Value: -1724 → -1723 → -1722

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 1723

Divisors: 1, 1723

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11010111011

Octal: -3273

Duodecimal: -BB7

Hexadecimal: -6bb

Square: 2968729

Square Root: 41.50903516103452

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

Dirichlet g.f.: 1 / (ζ(s) * ζ(s-1) * ζ(s-2)). A328254

a(n) = 139·n² - 2307·n + 3331. A230307

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 379", based on the 5-celled von Neumann neighborhood. A271538

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 473", based on the 5-celled von Neumann neighborhood. A272426

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

Half the number of 3 X n binary arrays with no path of adjacent 1's or adjacent 0's from top to bottom or side to side. A69448

Primes of the form 1 + n + n² + n³ + ... + n^k, n > 1, k > 1. A85104

Sum of divisors of square numbers. A65764

Primes of form k² + k + 1. A2383

Number of twice-partitions of type (Q,P,Q) and weight n. A279790