13543423 has 2 divisors, whose sum is σ = 13543424. Its totient is φ = 13543422.

The previous prime is 13543417. The next prime is 13543427. The reversal of 13543423 is 32434531.

13543423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13543423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13543427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6771711 + 6771712.

It is an arithmetic number, because the mean of its divisors is an integer number (6771712).

Almost surely, 2^13543423 is an apocalyptic number.

13543423 is a deficient number, since it is larger than the sum of its proper divisors (1).

13543423 is an equidigital number, since it uses as much as digits as its factorization.

13543423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 25.

The square root of 13543423 is about 3680.1389919404. The cubic root of 13543423 is about 238.3651798067.

Adding to 13543423 its reverse (32434531), we get a palindrome (45977954).

The spelling of 13543423 in words is "thirteen million, five hundred forty-three thousand, four hundred twenty-three".