Number 231
The number 231 is the 21st triangular number. It has 8 divisors and a digital root of 6. Explore its full properties below, or find words and phrases with a gematria value of 231.
231
Divisors: 8
1, 3, 7, 11, 21, 33, 77, 231
Sum: 384
Prev Triangular: 210
21st Triangular Number
Next Triangular: 253
Mathematical Properties
Golden Numbern/a
Reduced Digit Sum6
Magic Constant6,163,311
Digital Root6
Octal153(347)
Duodecimal325(173)
Hexadecimal561(e7)
Binary11100111
231st Values
Prime1,453
Triangular26,796
Square53,361
Star318,781
Pentagonal79,926
Cube12,326,391
Tetrahedral2,081,156
Square Pyramidal4,135,516
Fibonaccin/a
Harshad1,056
Happy Number1,599