232011231 has 4 divisors (see below), whose sum is σ = 309348312. Its totient is φ = 154674152.

The previous prime is 232011217. The next prime is 232011239. The reversal of 232011231 is 132110232.

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

It is a cyclic number.

It is not a de Polignac number, because 232011231 - 2⁹ = 232010719 is a prime.

It is a super-2 number, since 2×232011231² = 107658422620270722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 232011231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232011239) 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, 38668536 + ... + 38668541.

It is an arithmetic number, because the mean of its divisors is an integer number (77337078).

Almost surely, 2^232011231 is an apocalyptic number.

232011231 is a deficient number, since it is larger than the sum of its proper divisors (77337081).

232011231 is an equidigital number, since it uses as much as digits as its factorization.

232011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77337080.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 232011231 is about 15231.9148829029. The cubic root of 232011231 is about 614.4732802617.

Adding to 232011231 its reverse (132110232), we get a palindrome (364121463).

Subtracting from 232011231 its reverse (132110232), we obtain a palindrome (99900999).

The spelling of 232011231 in words is "two hundred thirty-two million, eleven thousand, two hundred thirty-one".