Properties of the Number 1231

One Thousand Two Hundred Thirty-One

Basics

Value: 1230 → 1231 → 1232

Parity: odd

Prime: Yes

Previous Prime: 1229

Next Prime: 1237

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 1231

Divisors: 1, 1231

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011001111

Octal: 2317

Duodecimal: 867

Hexadecimal: 4cf

Square: 1515361

Square Root: 35.08560958569767

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

Greater of twin primes. A6512

Primes of the form k² + k + 41. A5846

Primes of the form 10·n+1. A30430

Number of 3 X n binary arrays with a path of adjacent 1's and no path of adjacent 0's from top row to bottom row. A69417

Primes whose decimal representation is a valid number in base 4 and interpreted as such is again a prime. A90707

Primes such that their decimal representations interpreted in base 11 are also prime. A91924

Primes whose decimal representation is a valid number in base 9 and interpreted as such is again a prime. A235395

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 3⁴.6 2D tiling (cf. A250120). A299254

Primes that become a different prime under the mapping 0 <=> 2. A180517

Number of partitions of n that sorted in increasing order do not contain a part k in position k. A238394