231321120232 has 16 divisors (see below), whose sum is σ = 440837381700. Its totient is φ = 113764485120.

The previous prime is 231321120229. The next prime is 231321120271. The reversal of 231321120232 is 232021123132.

It can be written as a sum of positive squares in 2 ways, for example, as 215431509316 + 15889610916 = 464146^2 + 126054^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237008857 + ... + 237009832.

Almost surely, 2^231321120232 is an apocalyptic number.

It is an amenable number.

231321120232 is a deficient number, since it is larger than the sum of its proper divisors (209516261468).

231321120232 is a wasteful number, since it uses less digits than its factorization.

231321120232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474018756 (or 474018752 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231321120232 its reverse (232021123132), we get a palindrome (463342243364).

The spelling of 231321120232 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred twenty thousand, two hundred thirty-two".