231021011033 has 16 divisors (see below), whose sum is σ = 241820375040. Its totient is φ = 220501201536.

The previous prime is 231021011021. The next prime is 231021011041. The reversal of 231021011033 is 330110120132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231021011033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231021011833) 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, 142010 + ... + 694412.

It is an arithmetic number, because the mean of its divisors is an integer number (15113773440).

Almost surely, 2^231021011033 is an apocalyptic number.

It is an amenable number.

231021011033 is a deficient number, since it is larger than the sum of its proper divisors (10799364007).

231021011033 is a wasteful number, since it uses less digits than its factorization.

231021011033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552656.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 231021011033 its reverse (330110120132), we get a palindrome (561131131165).

The spelling of 231021011033 in words is "two hundred thirty-one billion, twenty-one million, eleven thousand, thirty-three".