31200200123212 has 48 divisors (see below), whose sum is σ = 54936406103040. Its totient is φ = 15504399948800.

The previous prime is 31200200123171. The next prime is 31200200123237. The reversal of 31200200123212 is 21232100200213.

It is a self number, because there is not a number n which added to its sum of digits gives 31200200123212.

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, 1392295464 + ... + 1392317872.

It is an arithmetic number, because the mean of its divisors is an integer number (1144508460480).

Almost surely, 2^{31200200123212} is an apocalyptic number.

It is an amenable number.

31200200123212 is a deficient number, since it is larger than the sum of its proper divisors (23736205979828).

31200200123212 is a wasteful number, since it uses less digits than its factorization.

31200200123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25842 (or 25840 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31200200123212 its reverse (21232100200213), we get a palindrome (52432300323425).

The spelling of 31200200123212 in words is "thirty-one trillion, two hundred billion, two hundred million, one hundred twenty-three thousand, two hundred twelve".