31230201232 has 20 divisors (see below), whose sum is σ = 61500459676. Its totient is φ = 15359114880.

The previous prime is 31230201227. The next prime is 31230201281. The reversal of 31230201232 is 23210203213.

It can be written as a sum of positive squares in 2 ways, for example, as 3246264576 + 27983936656 = 56976^2 + 167284^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15998103 + ... + 16000054.

Almost surely, 2^31230201232 is an apocalyptic number.

It is an amenable number.

31230201232 is a deficient number, since it is larger than the sum of its proper divisors (30270258444).

31230201232 is a wasteful number, since it uses less digits than its factorization.

31230201232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31998226 (or 31998220 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31230201232 its reverse (23210203213), we get a palindrome (54440404445).

The spelling of 31230201232 in words is "thirty-one billion, two hundred thirty million, two hundred one thousand, two hundred thirty-two".