320321301320 has 16 divisors (see below), whose sum is σ = 720722928060. Its totient is φ = 128128520512.

The previous prime is 320321301301. The next prime is 320321301361. The reversal of 320321301320 is 23103123023.

It can be written as a sum of positive squares in 2 ways, for example, as 315976645924 + 4344655396 = 562118^2 + 65914^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 320321301292 and 320321301301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4004016227 + ... + 4004016306.

Almost surely, 2^320321301320 is an apocalyptic number.

It is an amenable number.

320321301320 is an abundant number, since it is smaller than the sum of its proper divisors (400401626740).

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

320321301320 is a wasteful number, since it uses less digits than its factorization.

320321301320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8008032544 (or 8008032540 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 320321301320 its reverse (23103123023), we get a palindrome (343424424343).

The spelling of 320321301320 in words is "three hundred twenty billion, three hundred twenty-one million, three hundred one thousand, three hundred twenty".