320020011100 has 72 divisors (see below), whose sum is σ = 705092871168. Its totient is φ = 126049425600.

The previous prime is 320020011083. The next prime is 320020011193. The reversal of 320020011100 is 1110020023.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5815917 + ... + 5870683.

It is an arithmetic number, because the mean of its divisors is an integer number (9792956544).

Almost surely, 2^320020011100 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 320020011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352546435584).

320020011100 is an abundant number, since it is smaller than the sum of its proper divisors (385072860068).

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

320020011100 is a wasteful number, since it uses less digits than its factorization.

320020011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55675 (or 55668 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 320020011100 its reverse (1110020023), we get a palindrome (321130031123).

The spelling of 320020011100 in words is "three hundred twenty billion, twenty million, eleven thousand, one hundred".