20113111000312 has 32 divisors (see below), whose sum is σ = 41181718745520. Its totient is φ = 9133153309440.

The previous prime is 20113111000303. The next prime is 20113111000337. The reversal of 20113111000312 is 21300011131102.

It is a happy number.

It is a super-2 number, since 2×20113111000312² (a number of 27 digits) contains 22 as substring.

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, 114535173 + ... + 114710644.

Almost surely, 2^{20113111000312} is an apocalyptic number.

20113111000312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20113111000312 is an abundant number, since it is smaller than the sum of its proper divisors (21068607745208).

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

20113111000312 is a wasteful number, since it uses less digits than its factorization.

20113111000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229246831 (or 229246827 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20113111000312 its reverse (21300011131102), we get a palindrome (41413122131414).

The spelling of 20113111000312 in words is "twenty trillion, one hundred thirteen billion, one hundred eleven million, three hundred twelve", and thus it is an aban number.