13344321 has 16 divisors (see below), whose sum is σ = 18538560. Its totient is φ = 8527680.

The previous prime is 13344313. The next prime is 13344341. The reversal of 13344321 is 12344331.

13344321 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13344321 - 2³ = 13344313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13344341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13711 + ... + 14651.

It is an arithmetic number, because the mean of its divisors is an integer number (1158660).

Almost surely, 2^13344321 is an apocalyptic number.

It is an amenable number.

13344321 is a deficient number, since it is larger than the sum of its proper divisors (5194239).

13344321 is a wasteful number, since it uses less digits than its factorization.

13344321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its digits is 864, while the sum is 21.

The square root of 13344321 is about 3652.9879550855. The cubic root of 13344321 is about 237.1913390117.

Adding to 13344321 its reverse (12344331), we get a palindrome (25688652).

The spelling of 13344321 in words is "thirteen million, three hundred forty-four thousand, three hundred twenty-one".