31313422431312 has 40 divisors (see below), whose sum is σ = 92449151941056. Its totient is φ = 8946692123136.

The previous prime is 31313422431289. The next prime is 31313422431349. The reversal of 31313422431312 is 21313422431313.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46597354473 + ... + 46597355144.

Almost surely, 2^{31313422431312} is an apocalyptic number.

It is an amenable number.

31313422431312 is an abundant number, since it is smaller than the sum of its proper divisors (61135729509744).

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

31313422431312 is a wasteful number, since it uses less digits than its factorization.

31313422431312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93194709635 (or 93194709629 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

Adding to 31313422431312 its reverse (21313422431313), we get a palindrome (52626844862625).

Subtracting from 31313422431312 its reverse (21313422431313), we obtain a palindrome (9999999999999).

The spelling of 31313422431312 in words is "thirty-one trillion, three hundred thirteen billion, four hundred twenty-two million, four hundred thirty-one thousand, three hundred twelve".