31313321233112 has 128 divisors (see below), whose sum is σ = 64397949696000. Its totient is φ = 14210061465600.

The previous prime is 31313321233091. The next prime is 31313321233133. The reversal of 31313321233112 is 21133212331313.

It is an interprime number because it is at equal distance from previous prime (31313321233091) and next prime (31313321233133).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3557114903 + ... + 3557123705.

It is an arithmetic number, because the mean of its divisors is an integer number (503108982000).

Almost surely, 2^{31313321233112} is an apocalyptic number.

It is an amenable number.

31313321233112 is an abundant number, since it is smaller than the sum of its proper divisors (33084628462888).

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

31313321233112 is a wasteful number, since it uses less digits than its factorization.

31313321233112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11737 (or 11733 counting only the distinct ones).

The product of its digits is 5832, while the sum is 29.

Adding to 31313321233112 its reverse (21133212331313), we get a palindrome (52446533564425).

The spelling of 31313321233112 in words is "thirty-one trillion, three hundred thirteen billion, three hundred twenty-one million, two hundred thirty-three thousand, one hundred twelve".