232213231 has 4 divisors (see below), whose sum is σ = 244435000. Its totient is φ = 219991464.

The previous prime is 232213213. The next prime is 232213243. The reversal of 232213231 is 132312232.

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 232213231 - 2⁵ = 232213199 is a prime.

It is a super-2 number, since 2×232213231² = 107845969302918722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 12221749 = 232213231 / (2 + 3 + 2 + 2 + 1 + 3 + 2 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 232213199 and 232213208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232213211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6110856 + ... + 6110893.

It is an arithmetic number, because the mean of its divisors is an integer number (61108750).

Almost surely, 2^232213231 is an apocalyptic number.

232213231 is a deficient number, since it is larger than the sum of its proper divisors (12221769).

232213231 is a wasteful number, since it uses less digits than its factorization.

232213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12221768.

The product of its digits is 432, while the sum is 19.

The square root of 232213231 is about 15238.5442546196. The cubic root of 232213231 is about 614.6515584092.

Adding to 232213231 its reverse (132312232), we get a palindrome (364525463).

Subtracting from 232213231 its reverse (132312232), we obtain a palindrome (99900999).

The spelling of 232213231 in words is "two hundred thirty-two million, two hundred thirteen thousand, two hundred thirty-one".