31013213112200 has 96 divisors (see below), whose sum is σ = 81373227048000. Its totient is φ = 10888651603200.

The previous prime is 31013213112181. The next prime is 31013213112221. The reversal of 31013213112200 is 221131231013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242986460 + ... + 243114059.

It is an arithmetic number, because the mean of its divisors is an integer number (847637781750).

Almost surely, 2^{31013213112200} is an apocalyptic number.

It is an amenable number.

31013213112200 is an abundant number, since it is smaller than the sum of its proper divisors (50360013935800).

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

31013213112200 is a wasteful number, since it uses less digits than its factorization.

31013213112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486100575 (or 486100566 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31013213112200 its reverse (221131231013), we get a palindrome (31234344343213).

The spelling of 31013213112200 in words is "thirty-one trillion, thirteen billion, two hundred thirteen million, one hundred twelve thousand, two hundred".