Properties of the Number -131044

One Hundred Thirty-One Thousand Forty-Four

Basics

Value: -131045 → -131044 → -131043

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 181 ²

Divisors: 1, 2, 4, 181, 362, 724, 32761, 65522, 131044

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111111111100100

Octal: -377744

Duodecimal: -63A04

Hexadecimal: -1ffe4

Square: 17172529936

Square Root: 362

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

Numbers k such that k and floor[k/3] are both squares; i.e., squares which remain squares when written in base 3 and last digit is removed. A55793

Main diagonal of A082043: a(n) = n⁴ + 2·n² + 1. A82044

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s. A297654

Starts of runs of 4 consecutive positive negabinary-Niven numbers (A331728). A331824

a(n) = (11·n + 10)². A17510

G.f.: -(1-3·x²-x³)/(1+4·x-4·x³-x⁴). A97948

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having index change +-(.,.) 0,0 0,1 or 1,2. A264341

Squares whose largest decimal digit is 4. A277948

a(n) is the largest square with n binary digits. A357754

a(n) = sigma₂(n)². A356533