231023311233 has 32 divisors (see below), whose sum is σ = 374361402240. Its totient is φ = 124787120640.

The previous prime is 231023311229. The next prime is 231023311243. The reversal of 231023311233 is 332113320132.

It is not a de Polignac number, because 231023311233 - 2² = 231023311229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231023311243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9272316 + ... + 9297197.

It is an arithmetic number, because the mean of its divisors is an integer number (11698793820).

Almost surely, 2^231023311233 is an apocalyptic number.

It is an amenable number.

231023311233 is a deficient number, since it is larger than the sum of its proper divisors (143338091007).

231023311233 is a wasteful number, since it uses less digits than its factorization.

231023311233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18569569.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231023311233 its reverse (332113320132), we get a palindrome (563136631365).

The spelling of 231023311233 in words is "two hundred thirty-one billion, twenty-three million, three hundred eleven thousand, two hundred thirty-three".