304320111020 has 96 divisors (see below), whose sum is σ = 646897358016. Its totient is φ = 120250368000.

The previous prime is 304320110977. The next prime is 304320111041. The reversal of 304320111020 is 20111023403.

It is a super-2 number, since 2×304320111020² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 304320111020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651648827 + ... + 651649293.

It is an arithmetic number, because the mean of its divisors is an integer number (6738514146).

Almost surely, 2^304320111020 is an apocalyptic number.

It is an amenable number.

304320111020 is an abundant number, since it is smaller than the sum of its proper divisors (342577246996).

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

304320111020 is a wasteful number, since it uses less digits than its factorization.

304320111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 304320111020 its reverse (20111023403), we get a palindrome (324431134423).

The spelling of 304320111020 in words is "three hundred four billion, three hundred twenty million, one hundred eleven thousand, twenty".