20111031000030 has 64 divisors (see below), whose sum is σ = 48484428344640. Its totient is φ = 5338731439104.

The previous prime is 20111031000017. The next prime is 20111031000077. The reversal of 20111031000030 is 3000013011102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46894132 + ... + 47321048.

It is an arithmetic number, because the mean of its divisors is an integer number (757569192885).

Almost surely, 2^{20111031000030} is an apocalyptic number.

20111031000030 is an abundant number, since it is smaller than the sum of its proper divisors (28373397344610).

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

20111031000030 is a wasteful number, since it uses less digits than its factorization.

20111031000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434013.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 20111031000030 its reverse (3000013011102), we get a palindrome (23111044011132).

The spelling of 20111031000030 in words is "twenty trillion, one hundred eleven billion, thirty-one million, thirty", and thus it is an aban number.