20113011231312 has 20 divisors (see below), whose sum is σ = 51958612347680. Its totient is φ = 6704337077088.

The previous prime is 20113011231311. The next prime is 20113011231323. The reversal of 20113011231312 is 21313211031102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113011231311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209510533612 + ... + 209510533707.

It is an arithmetic number, because the mean of its divisors is an integer number (2597930617384).

Almost surely, 2^{20113011231312} is an apocalyptic number.

It is an amenable number.

20113011231312 is an abundant number, since it is smaller than the sum of its proper divisors (31845601116368).

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

20113011231312 is a wasteful number, since it uses less digits than its factorization.

20113011231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419021067330 (or 419021067324 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 20113011231312 its reverse (21313211031102), we get a palindrome (41426222262414).

The spelling of 20113011231312 in words is "twenty trillion, one hundred thirteen billion, eleven million, two hundred thirty-one thousand, three hundred twelve".