320231201321 has 8 divisors (see below), whose sum is σ = 330555578760. Its totient is φ = 309994691328.

The previous prime is 320231201317. The next prime is 320231201377. The reversal of 320231201321 is 123102132023.

It can be written as a sum of positive squares in 4 ways, for example, as 249411346921 + 70819854400 = 499411^2 + 266120^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320231201321 - 2² = 320231201317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320231201293 and 320231201302.

It is not an unprimeable number, because it can be changed into a prime (320231501321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21959456 + ... + 21974033.

It is an arithmetic number, because the mean of its divisors is an integer number (41319447345).

Almost surely, 2^320231201321 is an apocalyptic number.

It is an amenable number.

320231201321 is a deficient number, since it is larger than the sum of its proper divisors (10324377439).

320231201321 is a wasteful number, since it uses less digits than its factorization.

320231201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43933723.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 320231201321 its reverse (123102132023), we get a palindrome (443333333344).

The spelling of 320231201321 in words is "three hundred twenty billion, two hundred thirty-one million, two hundred one thousand, three hundred twenty-one".