320244331420 has 48 divisors (see below), whose sum is σ = 749218851360. Its totient is φ = 114166676736.

The previous prime is 320244331397. The next prime is 320244331457. The reversal of 320244331420 is 24133442023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21228822 + ... + 21243901.

It is an arithmetic number, because the mean of its divisors is an integer number (15608726070).

Almost surely, 2^320244331420 is an apocalyptic number.

It is an amenable number.

320244331420 is an abundant number, since it is smaller than the sum of its proper divisors (428974519940).

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

320244331420 is a wasteful number, since it uses less digits than its factorization.

320244331420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42472774 (or 42472772 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 320244331420 its reverse (24133442023), we get a palindrome (344377773443).

The spelling of 320244331420 in words is "three hundred twenty billion, two hundred forty-four million, three hundred thirty-one thousand, four hundred twenty".