31341021312 has 32 divisors (see below), whose sum is σ = 83249588880. Its totient is φ = 10447006976.

The previous prime is 31341021301. The next prime is 31341021319. The reversal of 31341021312 is 21312014313.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (31341021319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40808238 + ... + 40809005.

Almost surely, 2^31341021312 is an apocalyptic number.

31341021312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31341021312 is an abundant number, since it is smaller than the sum of its proper divisors (51908567568).

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

31341021312 is an equidigital number, since it uses as much as digits as its factorization.

31341021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81617260 (or 81617248 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31341021312 its reverse (21312014313), we get a palindrome (52653035625).

The spelling of 31341021312 in words is "thirty-one billion, three hundred forty-one million, twenty-one thousand, three hundred twelve".