231133238 has 8 divisors (see below), whose sum is σ = 396228432. Its totient is φ = 99057096.

The previous prime is 231133237. The next prime is 231133261. The reversal of 231133238 is 832331132.

231133238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231133237) 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, 8254745 + ... + 8254772.

It is an arithmetic number, because the mean of its divisors is an integer number (49528554).

Almost surely, 2^231133238 is an apocalyptic number.

231133238 is a deficient number, since it is larger than the sum of its proper divisors (165095194).

231133238 is a wasteful number, since it uses less digits than its factorization.

231133238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16509526.

The product of its digits is 2592, while the sum is 26.

The square root of 231133238 is about 15203.0667301042. The cubic root of 231133238 is about 613.6971896494.

The spelling of 231133238 in words is "two hundred thirty-one million, one hundred thirty-three thousand, two hundred thirty-eight".