20312031122012 has 36 divisors (see below), whose sum is σ = 41364633804984. Its totient is φ = 8701968431520.

The previous prime is 20312031121961. The next prime is 20312031122029. The reversal of 20312031122012 is 21022113021302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18438143 + ... + 19508694.

It is an arithmetic number, because the mean of its divisors is an integer number (1149017605694).

Almost surely, 2^{20312031122012} is an apocalyptic number.

It is an amenable number.

20312031122012 is an abundant number, since it is smaller than the sum of its proper divisors (21052602682972).

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

20312031122012 is a wasteful number, since it uses less digits than its factorization.

20312031122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37949586 (or 37949577 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20312031122012 its reverse (21022113021302), we get a palindrome (41334144143314).

The spelling of 20312031122012 in words is "twenty trillion, three hundred twelve billion, thirty-one million, one hundred twenty-two thousand, twelve".