31212103110200 has 48 divisors (see below), whose sum is σ = 72830118704280. Its totient is φ = 12439769592960.

The previous prime is 31212103110169. The next prime is 31212103110217. The reversal of 31212103110200 is 201130121213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281642282 + ... + 281753081.

Almost surely, 2^{31212103110200} is an apocalyptic number.

It is an amenable number.

31212103110200 is an abundant number, since it is smaller than the sum of its proper divisors (41618015594080).

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

31212103110200 is a wasteful number, since it uses less digits than its factorization.

31212103110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563395656 (or 563395647 counting only the distinct ones).

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

Adding to 31212103110200 its reverse (201130121213), we get a palindrome (31413233231413).

The spelling of 31212103110200 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred ten thousand, two hundred".