320304204012 has 144 divisors (see below), whose sum is σ = 820807616160. Its totient is φ = 97160454144.

The previous prime is 320304203983. The next prime is 320304204029. The reversal of 320304204012 is 210402403023.

It is a super-2 number, since 2×320304204012² (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 320304204012.

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 47 ways as a sum of consecutive naturals, for example, 52913578 + ... + 52919630.

It is an arithmetic number, because the mean of its divisors is an integer number (5700052890).

Almost surely, 2^320304204012 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 320304204012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410403808080).

320304204012 is an abundant number, since it is smaller than the sum of its proper divisors (500503412148).

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

320304204012 is a wasteful number, since it uses less digits than its factorization.

320304204012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452 (or 6437 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 320304204012 its reverse (210402403023), we get a palindrome (530706607035).

The spelling of 320304204012 in words is "three hundred twenty billion, three hundred four million, two hundred four thousand, twelve".