31212103200112 has 40 divisors (see below), whose sum is σ = 60738538315104. Its totient is φ = 15537653935104.

The previous prime is 31212103200107. The next prime is 31212103200151. The reversal of 31212103200112 is 21100230121213.

It is a super-2 number, since 2×31212103200112² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31212103200112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41052573 + ... + 41805955.

Almost surely, 2^{31212103200112} is an apocalyptic number.

It is an amenable number.

31212103200112 is a deficient number, since it is larger than the sum of its proper divisors (29526435114992).

31212103200112 is a wasteful number, since it uses less digits than its factorization.

31212103200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764737 (or 764731 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31212103200112 its reverse (21100230121213), we get a palindrome (52312333321325).

The spelling of 31212103200112 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, two hundred thousand, one hundred twelve".