31212101130200 has 24 divisors (see below), whose sum is σ = 72568135128180. Its totient is φ = 12484840452000.

The previous prime is 31212101130191. The next prime is 31212101130211. The reversal of 31212101130200 is 203110121213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78030252626 + ... + 78030253025.

Almost surely, 2^{31212101130200} is an apocalyptic number.

It is an amenable number.

31212101130200 is an abundant number, since it is smaller than the sum of its proper divisors (41356033997980).

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

31212101130200 is a wasteful number, since it uses less digits than its factorization.

31212101130200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156060505667 (or 156060505658 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31212101130200 its reverse (203110121213), we get a palindrome (31415211251413).

The spelling of 31212101130200 in words is "thirty-one trillion, two hundred twelve billion, one hundred one million, one hundred thirty thousand, two hundred".