311112020000 has 120 divisors (see below), whose sum is σ = 766425487212. Its totient is φ = 124275200000.

The previous prime is 311112019921. The next prime is 311112020029. The reversal of 311112020000 is 20211113.

It can be written as a sum of positive squares in 10 ways, for example, as 61915373584 + 249196646416 = 248828^2 + 499196^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15209780 + ... + 15230220.

Almost surely, 2^311112020000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311112020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383212743606).

311112020000 is an abundant number, since it is smaller than the sum of its proper divisors (455313467212).

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

311112020000 is an equidigital number, since it uses as much as digits as its factorization.

311112020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21232 (or 21209 counting only the distinct ones).

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

Adding to 311112020000 its reverse (20211113), we get a palindrome (311132231113).

The spelling of 311112020000 in words is "three hundred eleven billion, one hundred twelve million, twenty thousand".