Properties of the Number -213281

Two Hundred Thirteen Thousand Two Hundred Eighty-One

Basics

Value: -213282 → -213281 → -213280

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 213281

Divisors: 1, 213281

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100000100100001

Octal: -640441

Duodecimal: -A3515

Hexadecimal: -34121

Square: 45488784961

Square Root: 461.82355938171884

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

Let j be the smallest integer for which 1+(1+1·n)+(1+2·n)+...+(1+j·n)=k²=s. Then a(n)=1+j·n; if no such j exists, then a(n)=0. A100253

Constant term in the reduction by (x² -> x + 1) of the polynomial p(n,x) defined below at Comments. A192906