Properties of the Number -331

Three Hundred Thirty-One

Basics

Value: -332 → -331 → -330

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 331

Divisors: 1, 331

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: -101001011

Octal: -513

Duodecimal: -237

Hexadecimal: -14b

Square: 109561

Square Root: 18.193405398660254

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

a(n) is the numerator of the real part of ∏_k=1..n (1/k + i) where i is the imaginary unit. A370547

Shifts 4 places left under inverse binomial transform. A10743

Expansion of ∑_n>=0 x^n²-n / (1 + xⁿ)ⁿ. A260148

Expansion of (1/x) * Series_Reversion( x/(1-x-x⁴) ). A366086

a(n) = n² - primefloor(n)*primeceiling(n). A56139

Expansion of χ(x³) / χ(x) in powers of·where χ() is a Ramanujan θ function. A227398

a(n) = 2·a(n-1) + a(n-2) - 2·a(n-3) - a(n-4) for n>3, a(0)=a(1)=a(3)=0, a(2)=1. A240847

a(n+3) = -a(n+2) - 2·a(n+1) + a(n) with a(0)=3, a(1)=-1, a(2)=-3. A276228

a(n) = μ(n)*prime(n). A62007

Expansion of (x²+1)/(x⁴+2·x³-2·x+1). A188802