320123020200 has 96 divisors (see below), whose sum is σ = 1015460080800. Its totient is φ = 83380872960.

The previous prime is 320123020199. The next prime is 320123020223. The reversal of 320123020200 is 2020321023.

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

It is a self number, because there is not a number n which added to its sum of digits gives 320123020200.

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, 6178135 + ... + 6229734.

It is an arithmetic number, because the mean of its divisors is an integer number (10577709175).

Almost surely, 2^320123020200 is an apocalyptic number.

320123020200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320123020200 is an abundant number, since it is smaller than the sum of its proper divisors (695337060600).

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

320123020200 is a wasteful number, since it uses less digits than its factorization.

320123020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12407931 (or 12407922 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 320123020200 its reverse (2020321023), we get a palindrome (322143341223).

The spelling of 320123020200 in words is "three hundred twenty billion, one hundred twenty-three million, twenty thousand, two hundred".