13203022321 has 4 divisors (see below), whose sum is σ = 13203320692. Its totient is φ = 13202723952.

The previous prime is 13203022319. The next prime is 13203022351. The reversal of 13203022321 is 12322030231.

13203022321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10746432225 + 2456590096 = 103665^2 + 49564^2 .

It is a cyclic number.

It is not a de Polignac number, because 13203022321 - 2¹ = 13203022319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13203022351) 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 3 ways as a sum of consecutive naturals, for example, 68130 + ... + 176203.

It is an arithmetic number, because the mean of its divisors is an integer number (3300830173).

Almost surely, 2^13203022321 is an apocalyptic number.

It is an amenable number.

13203022321 is a deficient number, since it is larger than the sum of its proper divisors (298371).

13203022321 is an equidigital number, since it uses as much as digits as its factorization.

13203022321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298370.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13203022321 its reverse (12322030231), we get a palindrome (25525052552).

The spelling of 13203022321 in words is "thirteen billion, two hundred three million, twenty-two thousand, three hundred twenty-one".