320202230321 has 8 divisors (see below), whose sum is σ = 348200836200. Its totient is φ = 293221755648.

The previous prime is 320202230311. The next prime is 320202230329. The reversal of 320202230321 is 123032202023.

It can be written as a sum of positive squares in 4 ways, for example, as 206784829696 + 113417400625 = 454736^2 + 336775^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320202230321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320202230293 and 320202230302.

It is not an unprimeable number, because it can be changed into a prime (320202230329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254532146 + ... + 254533403.

It is an arithmetic number, because the mean of its divisors is an integer number (43525104525).

Almost surely, 2^320202230321 is an apocalyptic number.

It is an amenable number.

320202230321 is a deficient number, since it is larger than the sum of its proper divisors (27998605879).

320202230321 is a wasteful number, since it uses less digits than its factorization.

320202230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509065603.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 320202230321 its reverse (123032202023), we get a palindrome (443234432344).

The spelling of 320202230321 in words is "three hundred twenty billion, two hundred two million, two hundred thirty thousand, three hundred twenty-one".