231233231 has 8 divisors (see below), whose sum is σ = 236839680. Its totient is φ = 225637272.

The previous prime is 231233227. The next prime is 231233243. The reversal of 231233231 is 132332132.

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

It is a cyclic number.

It is not a de Polignac number, because 231233231 - 2² = 231233227 is a prime.

It is a super-2 number, since 2×231233231² = 106937614237398722, 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 (231233221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59300 + ... + 63078.

It is an arithmetic number, because the mean of its divisors is an integer number (29604960).

Almost surely, 2^231233231 is an apocalyptic number.

231233231 is a deficient number, since it is larger than the sum of its proper divisors (5606449).

231233231 is a wasteful number, since it uses less digits than its factorization.

231233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245.

The product of its digits is 648, while the sum is 20.

The square root of 231233231 is about 15206.3549544261. The cubic root of 231233231 is about 613.7856762390.

Adding to 231233231 its reverse (132332132), we get a palindrome (363565363).

The spelling of 231233231 in words is "two hundred thirty-one million, two hundred thirty-three thousand, two hundred thirty-one".