31023231232 has 54 divisors (see below), whose sum is σ = 72035556558. Its totient is φ = 13295665152.

The previous prime is 31023231227. The next prime is 31023231247. The reversal of 31023231232 is 23213232013.

It can be written as a sum of positive squares in only one way, i.e., 22423265536 + 8599965696 = 149744^2 + 92736^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224033 + ... + 1249120.

Almost surely, 2^31023231232 is an apocalyptic number.

31023231232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31023231232 is an abundant number, since it is smaller than the sum of its proper divisors (41012325326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31023231232 is an equidigital number, since it uses as much as digits as its factorization.

31023231232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473183 (or 2473162 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31023231232 its reverse (23213232013), we get a palindrome (54236463245).

The spelling of 31023231232 in words is "thirty-one billion, twenty-three million, two hundred thirty-one thousand, two hundred thirty-two".