231051 has 4 divisors (see below), whose sum is σ = 308072. Its totient is φ = 154032.

The previous prime is 231041. The next prime is 231053. The reversal of 231051 is 150132.

231051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 231051 - 2⁵ = 231019 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38506 + ... + 38511.

It is an arithmetic number, because the mean of its divisors is an integer number (77018).

2²³¹⁰⁵¹ is an apocalyptic number.

231051 is a deficient number, since it is larger than the sum of its proper divisors (77021).

231051 is an equidigital number, since it uses as much as digits as its factorization.

231051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77020.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 231051 is about 480.6776466615. The cubic root of 231051 is about 61.3624395826.

Adding to 231051 its reverse (150132), we get a palindrome (381183).

The spelling of 231051 in words is "two hundred thirty-one thousand, fifty-one".