20112013031312 has 20 divisors (see below), whose sum is σ = 41017921314480. Its totient is φ = 9526743014688.

The previous prime is 20112013031281. The next prime is 20112013031317. The reversal of 20112013031312 is 21313031021102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20112013031317) 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, 33078968498 + ... + 33078969105.

It is an arithmetic number, because the mean of its divisors is an integer number (2050896065724).

Almost surely, 2^{20112013031312} is an apocalyptic number.

It is an amenable number.

20112013031312 is an abundant number, since it is smaller than the sum of its proper divisors (20905908283168).

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

20112013031312 is a wasteful number, since it uses less digits than its factorization.

20112013031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66157937630 (or 66157937624 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20112013031312 its reverse (21313031021102), we get a palindrome (41425044052414).

The spelling of 20112013031312 in words is "twenty trillion, one hundred twelve billion, thirteen million, thirty-one thousand, three hundred twelve".