231256 has 16 divisors (see below), whose sum is σ = 438840. Its totient is φ = 114240.

The previous prime is 231241. The next prime is 231269. The reversal of 231256 is 652132.

It is a happy number.

231256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

231256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991 + ... + 1201.

231256 is a Friedman number, since it can be written as 12^5-26^3, using all its digits and the basic arithmetic operations.

2²³¹²⁵⁶ is an apocalyptic number.

It is an amenable number.

231256 is a deficient number, since it is larger than the sum of its proper divisors (207584).

231256 is a wasteful number, since it uses less digits than its factorization.

231256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 350 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 231256 is about 480.8908400043. The cubic root of 231256 is about 61.3805821595.

Adding to 231256 its reverse (652132), we get a palindrome (883388).

The spelling of 231256 in words is "two hundred thirty-one thousand, two hundred fifty-six".