233220231 has 24 divisors (see below), whose sum is σ = 355400240. Its totient is φ = 146966400.

The previous prime is 233220227. The next prime is 233220257. The reversal of 233220231 is 132022332.

It is a happy number.

It is not a de Polignac number, because 233220231 - 2² = 233220227 is a prime.

It is a super-2 number, since 2×233220231² = 108783352295386722, 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 (233220431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91251 + ... + 93771.

Almost surely, 2^233220231 is an apocalyptic number.

233220231 is a deficient number, since it is larger than the sum of its proper divisors (122180009).

233220231 is a wasteful number, since it uses less digits than its factorization.

233220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087 (or 3084 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 233220231 is about 15271.5497248969. The cubic root of 233220231 is about 615.5387624692.

Adding to 233220231 its reverse (132022332), we get a palindrome (365242563).

The spelling of 233220231 in words is "two hundred thirty-three million, two hundred twenty thousand, two hundred thirty-one".