320303215320 has 128 divisors (see below), whose sum is σ = 1061534592000. Its totient is φ = 76666337280.

The previous prime is 320303215279. The next prime is 320303215321. The reversal of 320303215320 is 23512303023.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320303215321) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1431505 + ... + 1640064.

It is an arithmetic number, because the mean of its divisors is an integer number (8293239000).

Almost surely, 2^320303215320 is an apocalyptic number.

320303215320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320303215320 is an abundant number, since it is smaller than the sum of its proper divisors (741231376680).

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

320303215320 is a wasteful number, since it uses less digits than its factorization.

320303215320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071673 (or 3071669 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

Adding to 320303215320 its reverse (23512303023), we get a palindrome (343815518343).

The spelling of 320303215320 in words is "three hundred twenty billion, three hundred three million, two hundred fifteen thousand, three hundred twenty".