31102313121320 has 64 divisors (see below), whose sum is σ = 79999638405120. Its totient is φ = 10660681972224.

The previous prime is 31102313121317. The next prime is 31102313121377. The reversal of 31102313121320 is 2312131320113.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14451752 + ... + 16463831.

It is an arithmetic number, because the mean of its divisors is an integer number (1249994350080).

Almost surely, 2^{31102313121320} is an apocalyptic number.

It is an amenable number.

31102313121320 is an abundant number, since it is smaller than the sum of its proper divisors (48897325283800).

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

31102313121320 is a wasteful number, since it uses less digits than its factorization.

31102313121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30919194 (or 30919190 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31102313121320 its reverse (2312131320113), we get a palindrome (33414444441433).

The spelling of 31102313121320 in words is "thirty-one trillion, one hundred two billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred twenty".