320313132321 has 64 divisors (see below), whose sum is σ = 548673699840. Its totient is φ = 161558115840.

The previous prime is 320313132311. The next prime is 320313132353. The reversal of 320313132321 is 123231313023.

It is not a de Polignac number, because 320313132321 - 2⁵ = 320313132289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320313132291 and 320313132300.

It is not an unprimeable number, because it can be changed into a prime (320313132301) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25806765 + ... + 25819173.

It is an arithmetic number, because the mean of its divisors is an integer number (8573026560).

Almost surely, 2^320313132321 is an apocalyptic number.

It is an amenable number.

320313132321 is a deficient number, since it is larger than the sum of its proper divisors (228360567519).

320313132321 is a wasteful number, since it uses less digits than its factorization.

320313132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 320313132321 its reverse (123231313023), we get a palindrome (443544445344).

The spelling of 320313132321 in words is "three hundred twenty billion, three hundred thirteen million, one hundred thirty-two thousand, three hundred twenty-one".