13440233 has 2 divisors, whose sum is σ = 13440234. Its totient is φ = 13440232.

The previous prime is 13440221. The next prime is 13440241. The reversal of 13440233 is 33204431.

13440233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12588304 + 851929 = 3548^2 + 923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13440233 is a prime.

It is not a weakly prime, because it can be changed into another prime (13440293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720116 + 6720117.

It is an arithmetic number, because the mean of its divisors is an integer number (6720117).

Almost surely, 2^13440233 is an apocalyptic number.

It is an amenable number.

13440233 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440233 is an equidigital number, since it uses as much as digits as its factorization.

13440233 is an evil number, because the sum of its binary digits is even.

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

The square root of 13440233 is about 3666.0923338072. The cubic root of 13440233 is about 237.7582520449.

Adding to 13440233 its reverse (33204431), we get a palindrome (46644664).

The spelling of 13440233 in words is "thirteen million, four hundred forty thousand, two hundred thirty-three".