31310033312 has 12 divisors (see below), whose sum is σ = 61641628146. Its totient is φ = 15655016640.

The previous prime is 31310033299. The next prime is 31310033317. The reversal of 31310033312 is 21333001313.

It can be written as a sum of positive squares in only one way, i.e., 18269306896 + 13040726416 = 135164^2 + 114196^2 .

It is not an unprimeable number, because it can be changed into a prime (31310033317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489219239 + ... + 489219302.

Almost surely, 2^31310033312 is an apocalyptic number.

31310033312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31310033312 is a deficient number, since it is larger than the sum of its proper divisors (30331594834).

31310033312 is an equidigital number, since it uses as much as digits as its factorization.

31310033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978438551 (or 978438543 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31310033312 its reverse (21333001313), we get a palindrome (52643034625).

The spelling of 31310033312 in words is "thirty-one billion, three hundred ten million, thirty-three thousand, three hundred twelve".