231238 has 16 divisors (see below), whose sum is σ = 403200. Its totient is φ = 97416.

The previous prime is 231223. The next prime is 231241. The reversal of 231238 is 832132.

It is a happy number.

231238 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

231238 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 7 ways as a sum of consecutive naturals, for example, 1063 + ... + 1261.

It is an arithmetic number, because the mean of its divisors is an integer number (25200).

2²³¹²³⁸ is an apocalyptic number.

231238 is a deficient number, since it is larger than the sum of its proper divisors (171962).

231238 is a wasteful number, since it uses less digits than its factorization.

231238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291.

The product of its digits is 288, while the sum is 19.

The square root of 231238 is about 480.8721243740. The cubic root of 231238 is about 61.3789895822.

The spelling of 231238 in words is "two hundred thirty-one thousand, two hundred thirty-eight".