231313111233 has 16 divisors (see below), whose sum is σ = 316898786880. Its totient is φ = 149971922496.

The previous prime is 231313111229. The next prime is 231313111247. The reversal of 231313111233 is 332111313132.

It is not a de Polignac number, because 231313111233 - 2² = 231313111229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231313111223) 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, 236310 + ... + 720047.

It is an arithmetic number, because the mean of its divisors is an integer number (19806174180).

Almost surely, 2^231313111233 is an apocalyptic number.

It is an amenable number.

231313111233 is a deficient number, since it is larger than the sum of its proper divisors (85585675647).

231313111233 is a wasteful number, since it uses less digits than its factorization.

231313111233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958576.

The product of its digits is 972, while the sum is 24.

Adding to 231313111233 its reverse (332111313132), we get a palindrome (563424424365).

The spelling of 231313111233 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred eleven thousand, two hundred thirty-three".