Properties of the Number -1223

Two Hundred Twenty-Three

Basics

Value: -1224 → -1223 → -1222

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 1223

Divisors: 1, 1223

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10011000111

Octal: -2307

Duodecimal: -85B

Hexadecimal: -4c7

Square: 1495729

Square Root: 34.97141690009142

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

Expansion of (1-5·x-x²+x³)/((1+x)*(1-x)³). A141354

a(n) = 2·n³ - 313·n² + 6823·n - 13633. A218456

a(n) = 1 - 4·n - 4·n². A184882

G.f. satisfies A(x) = exp( ∑_k>=1 A(x^k) * x^k/(k * (1 + x^k)³) ). A363575

Expansion of (1/x) * Series_Reversion( x/(x+1/(1+x³)) ). A370837

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 342", based on the 5-celled von Neumann neighborhood. A269512

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 261", based on the 5-celled von Neumann neighborhood. A271064

a(n) = -n² + 21·n - 1. A332884

Sophie Germain primes p: 2p+1 is also prime. A5384

Balanced primes (of order one): primes which are the average of the previous prime and the following prime. A6562