320321011313 has 4 divisors (see below), whose sum is σ = 328133718948. Its totient is φ = 312508303680.

The previous prime is 320321011271. The next prime is 320321011321. The reversal of 320321011313 is 313110123023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313110123023 = 227 ⋅1379339749.

It can be written as a sum of positive squares in 2 ways, for example, as 54217725409 + 266103285904 = 232847^2 + 515852^2 .

It is a cyclic number.

It is not a de Polignac number, because 320321011313 - 2⁸ = 320321011057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320321011613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3906353756 + ... + 3906353837.

It is an arithmetic number, because the mean of its divisors is an integer number (82033429737).

Almost surely, 2^320321011313 is an apocalyptic number.

It is an amenable number.

320321011313 is a deficient number, since it is larger than the sum of its proper divisors (7812707635).

320321011313 is an equidigital number, since it uses as much as digits as its factorization.

320321011313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812707634.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 320321011313 its reverse (313110123023), we get a palindrome (633431134336).

The spelling of 320321011313 in words is "three hundred twenty billion, three hundred twenty-one million, eleven thousand, three hundred thirteen".