13213423 has 2 divisors, whose sum is σ = 13213424. Its totient is φ = 13213422.

The previous prime is 13213399. The next prime is 13213441. The reversal of 13213423 is 32431231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13213423 - 2⁵ = 13213391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13213423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13210423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606711 + 6606712.

It is an arithmetic number, because the mean of its divisors is an integer number (6606712).

Almost surely, 2^13213423 is an apocalyptic number.

13213423 is a deficient number, since it is larger than the sum of its proper divisors (1).

13213423 is an equidigital number, since it uses as much as digits as its factorization.

13213423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 13213423 is about 3635.0272351112. The cubic root of 13213423 is about 236.4132315375.

Adding to 13213423 its reverse (32431231), we get a palindrome (45644654).

The spelling of 13213423 in words is "thirteen million, two hundred thirteen thousand, four hundred twenty-three".