13309423 has 2 divisors, whose sum is σ = 13309424. Its totient is φ = 13309422.

The previous prime is 13309421. The next prime is 13309427. The reversal of 13309423 is 32490331.

It is a happy number.

13309423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (32490331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13309423 - 2¹ = 13309421 is a prime.

Together with 13309421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13309421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6654711 + 6654712.

It is an arithmetic number, because the mean of its divisors is an integer number (6654712).

Almost surely, 2^13309423 is an apocalyptic number.

13309423 is a deficient number, since it is larger than the sum of its proper divisors (1).

13309423 is an equidigital number, since it uses as much as digits as its factorization.

13309423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 13309423 is about 3648.2081903312. The cubic root of 13309423 is about 236.9843913118.

Adding to 13309423 its reverse (32490331), we get a palindrome (45799754).

The spelling of 13309423 in words is "thirteen million, three hundred nine thousand, four hundred twenty-three".