320440032153304 has 32 divisors (see below), whose sum is σ = 686993973753600. Its totient is φ = 137264089952160.

The previous prime is 320440032153259. The next prime is 320440032153317. The reversal of 320440032153304 is 403351230044023.

It is a self number, because there is not a number n which added to its sum of digits gives 320440032153304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1403059782 + ... + 1403288149.

It is an arithmetic number, because the mean of its divisors is an integer number (21468561679800).

Almost surely, 2^{320440032153304} is an apocalyptic number.

It is an amenable number.

320440032153304 is an abundant number, since it is smaller than the sum of its proper divisors (366553941600296).

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

320440032153304 is a wasteful number, since it uses less digits than its factorization.

320440032153304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806349983 (or 2806349979 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 320440032153304 its reverse (403351230044023), we get a palindrome (723791262197327).

The spelling of 320440032153304 in words is "three hundred twenty trillion, four hundred forty billion, thirty-two million, one hundred fifty-three thousand, three hundred four".