311031112000020 has 96 divisors (see below), whose sum is σ = 898994200559616. Its totient is φ = 80264847504000.

The previous prime is 311031111999997. The next prime is 311031112000057. The reversal of 311031112000020 is 20000211130113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 121694245 + ... + 124223795.

It is an arithmetic number, because the mean of its divisors is an integer number (9364522922496).

Almost surely, 2^{311031112000020} is an apocalyptic number.

311031112000020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311031112000020 is an abundant number, since it is smaller than the sum of its proper divisors (587963088559596).

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

311031112000020 is a wasteful number, since it uses less digits than its factorization.

311031112000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595701 (or 2595699 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 311031112000020 its reverse (20000211130113), we get a palindrome (331031323130133).

The spelling of 311031112000020 in words is "three hundred eleven trillion, thirty-one billion, one hundred twelve million, twenty", and thus it is an aban number.