Properties of the Number -193131

One Hundred Ninety-Three Thousand One Hundred Thirty-One

Basics

Value: -193132 → -193131 → -193130

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 23 × 311

Divisors: 1, 3, 9, 23, 27, 69, 207, 311, 621, 933

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101111001001101011

Octal: -571153

Duodecimal: -93923

Hexadecimal: -2f26b

Square: 37299583161

Square Root: 439.4667222896405

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

Coefficients of non-constant terms of a Calabi-Yau modular form attached to 4-dimensional Dwork family. A300197

Triangular numbers with only odd digits. A117960

Triangular numbers k such that φ(k) is also a triangular number, where φ(k) is the Euler totient function (A000010). A287472

Triangular numbers composed of digits {1,3,9}. A119121

Triangular numbers t such that all the digits needed to write the consecutive triangular numbers from 0 to t fill exactly an equilateral triangle (no holes, no overlaps). A158030

Triangular numbers (A000217) in A353729. A370520