233431023 has 16 divisors (see below), whose sum is σ = 367179776. Its totient is φ = 129085920.

The previous prime is 233431019. The next prime is 233431043. The reversal of 233431023 is 320134332.

It is not a de Polignac number, because 233431023 - 2² = 233431019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233431043) 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, 178636 + ... + 179937.

It is an arithmetic number, because the mean of its divisors is an integer number (22948736).

Almost surely, 2^233431023 is an apocalyptic number.

233431023 is a deficient number, since it is larger than the sum of its proper divisors (133748753).

233431023 is a wasteful number, since it uses less digits than its factorization.

233431023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358614.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 233431023 is about 15278.4496268437. The cubic root of 233431023 is about 615.7241545839.

Adding to 233431023 its reverse (320134332), we get a palindrome (553565355).

The spelling of 233431023 in words is "two hundred thirty-three million, four hundred thirty-one thousand, twenty-three".