232111231 has 16 divisors (see below), whose sum is σ = 256849056. Its totient is φ = 208000000.

The previous prime is 232111219. The next prime is 232111237. The reversal of 232111231 is 132111232.

It is a 10-Lehmer number, since φ(232111231) divides (232111231-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 232111231 - 2²³ = 223722623 is a prime.

It is a super-2 number, since 2×232111231² = 107751247112670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232111237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445251 + ... + 445771.

It is an arithmetic number, because the mean of its divisors is an integer number (16053066).

Almost surely, 2^232111231 is an apocalyptic number.

232111231 is a deficient number, since it is larger than the sum of its proper divisors (24737825).

232111231 is a wasteful number, since it uses less digits than its factorization.

232111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its digits is 72, while the sum is 16.

The square root of 232111231 is about 15235.1971106382. The cubic root of 232111231 is about 614.5615496983.

Adding to 232111231 its reverse (132111232), we get a palindrome (364222463).

Subtracting from 232111231 its reverse (132111232), we obtain a palindrome (99999999).

It can be divided in two parts, 23211 and 1231, that added together give a palindrome (24442).

The spelling of 232111231 in words is "two hundred thirty-two million, one hundred eleven thousand, two hundred thirty-one".