20111000312 has 32 divisors (see below), whose sum is σ = 40814928000. Its totient is φ = 9234873984.

The previous prime is 20111000267. The next prime is 20111000333. The reversal of 20111000312 is 21300011102.

It is a junction number, because it is equal to n+sod(n) for n = 20111000293 and 20111000302.

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, 470312 + ... + 511287.

It is an arithmetic number, because the mean of its divisors is an integer number (1275466500).

Almost surely, 2^20111000312 is an apocalyptic number.

It is an amenable number.

20111000312 is an abundant number, since it is smaller than the sum of its proper divisors (20703927688).

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

20111000312 is a wasteful number, since it uses less digits than its factorization.

20111000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981815 (or 981811 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20111000312 its reverse (21300011102), we get a palindrome (41411011414).

The spelling of 20111000312 in words is "twenty billion, one hundred eleven million, three hundred twelve", and thus it is an aban number.