320003401200 has 120 divisors (see below), whose sum is σ = 1171517244288. Its totient is φ = 73143632640.

The previous prime is 320003401171. The next prime is 320003401243. The reversal of 320003401200 is 2104300023.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×320003401200² (a number of 24 digits) contains 22 as substring.

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 320003401200.

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, 19039422 + ... + 19056221.

Almost surely, 2^320003401200 is an apocalyptic number.

320003401200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320003401200 is an abundant number, since it is smaller than the sum of its proper divisors (851513843088).

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

320003401200 is a wasteful number, since it uses less digits than its factorization.

320003401200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38095671 (or 38095660 counting only the distinct ones).

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

Adding to 320003401200 its reverse (2104300023), we get a palindrome (322107701223).

The spelling of 320003401200 in words is "three hundred twenty billion, three million, four hundred one thousand, two hundred".