13320243 has 24 divisors (see below), whose sum is σ = 20236320. Its totient is φ = 8426880.

The previous prime is 13320233. The next prime is 13320247. The reversal of 13320243 is 34202331.

13320243 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13320243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13320247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47263 + ... + 47543.

It is an arithmetic number, because the mean of its divisors is an integer number (843180).

Almost surely, 2^13320243 is an apocalyptic number.

13320243 is a deficient number, since it is larger than the sum of its proper divisors (6916077).

13320243 is a wasteful number, since it uses less digits than its factorization.

13320243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 13320243 is about 3649.6908088220. The cubic root of 13320243 is about 237.0485933581.

Adding to 13320243 its reverse (34202331), we get a palindrome (47522574).

The spelling of 13320243 in words is "thirteen million, three hundred twenty thousand, two hundred forty-three".