231131302233 has 16 divisors (see below), whose sum is σ = 331891472640. Its totient is φ = 142230092544.

The previous prime is 231131302231. The next prime is 231131302289. The reversal of 231131302233 is 332203131132.

It is not a de Polignac number, because 231131302233 - 2¹ = 231131302231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231131302231) 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, 1461760 + ... + 1612142.

It is an arithmetic number, because the mean of its divisors is an integer number (20743217040).

Almost surely, 2^231131302233 is an apocalyptic number.

It is an amenable number.

231131302233 is a deficient number, since it is larger than the sum of its proper divisors (100760170407).

231131302233 is a wasteful number, since it uses less digits than its factorization.

231131302233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189808.

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

Adding to 231131302233 its reverse (332203131132), we get a palindrome (563334433365).

The spelling of 231131302233 in words is "two hundred thirty-one billion, one hundred thirty-one million, three hundred two thousand, two hundred thirty-three".