Number 231

Interestingness: 8 · Rank #494 of 1000

Visual representations

Binary image (n×n bits)
Triangular · P3(21) = 231
Hexagonal · P6(11) = 231
3711
Prime factorization

Representations of 231

σλαʹ
२३१
CCXXXI

▃▃▃▃▃
▃▃▃▃▃

▃▃▃▃▃
▃▃▃▃▃
二百三十一
𓈖𓈖
𓎆𓎆𓎆
𓏹
..---...--.----

231 in different numeral systems

Binary
Base-3
Base-4
Base-5
Base-6
Base-7
Base-8
Duodecimal
Hex
e7
Vigesimal
bb
Base-24
9f
Base-36
6f
Negabinary

Factorization

Prime factors: 3, 7, 11
Divisors: 1, 3, 7, 11, 21, 33, 77, 231
Sum of divisors other than 231: 153
Product of prime factors: 231 = 3 × 7 × 11

Number-theory characteristics (7)

Triangular Hexagonal Difference of 2 squares Evil number Odd Composite Deficient

Base-10 digit properties (1)

These depend on the decimal representation of the number.

Spy number

Related primes

Number 231 prime
Prime number before 231
Prime number after 231