13232321 has 4 divisors (see below), whose sum is σ = 13239600. Its totient is φ = 13225044.

The previous prime is 13232311. The next prime is 13232327. The reversal of 13232321 is 12323231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12323231 = 29 ⋅424939.

It is a cyclic number.

It is not a de Polignac number, because 13232321 - 2¹⁰ = 13231297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13232321.

It is not an unprimeable number, because it can be changed into a prime (13232327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670 + ... + 5408.

It is an arithmetic number, because the mean of its divisors is an integer number (3309900).

Almost surely, 2^13232321 is an apocalyptic number.

It is an amenable number.

13232321 is a deficient number, since it is larger than the sum of its proper divisors (7279).

13232321 is an equidigital number, since it uses as much as digits as its factorization.

13232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278.

The product of its digits is 216, while the sum is 17.

The square root of 13232321 is about 3637.6257366585. The cubic root of 13232321 is about 236.5258848851.

Adding to 13232321 its reverse (12323231), we get a palindrome (25555552).

The spelling of 13232321 in words is "thirteen million, two hundred thirty-two thousand, three hundred twenty-one".