232021231 has 4 divisors (see below), whose sum is σ = 249869032. Its totient is φ = 214173432.

The previous prime is 232021213. The next prime is 232021241. The reversal of 232021231 is 132120232.

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 232021231 - 2²³ = 223632623 is a prime.

It is a super-2 number, since 2×232021231² = 107667703269510722, 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 (232021241) 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, 8923881 + ... + 8923906.

It is an arithmetic number, because the mean of its divisors is an integer number (62467258).

Almost surely, 2^232021231 is an apocalyptic number.

232021231 is a deficient number, since it is larger than the sum of its proper divisors (17847801).

232021231 is a wasteful number, since it uses less digits than its factorization.

232021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17847800.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 232021231 is about 15232.2431375028. The cubic root of 232021231 is about 614.4821083466.

Adding to 232021231 its reverse (132120232), we get a palindrome (364141463).

Subtracting from 232021231 its reverse (132120232), we obtain a palindrome (99900999).

The spelling of 232021231 in words is "two hundred thirty-two million, twenty-one thousand, two hundred thirty-one".