13213405 has 8 divisors (see below), whose sum is σ = 16093152. Its totient is φ = 10412688.

The previous prime is 13213399. The next prime is 13213423. The reversal of 13213405 is 50431231.

13213405 is nontrivially palindromic in base 7.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13213405 - 2¹¹ = 13211357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19387 + ... + 20056.

It is an arithmetic number, because the mean of its divisors is an integer number (2011644).

Almost surely, 2^13213405 is an apocalyptic number.

It is an amenable number.

13213405 is a deficient number, since it is larger than the sum of its proper divisors (2879747).

13213405 is an equidigital number, since it uses as much as digits as its factorization.

13213405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39515.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13213405 is about 3635.0247592004. The cubic root of 13213405 is about 236.4131241861.

Adding to 13213405 its reverse (50431231), we get a palindrome (63644636).

The spelling of 13213405 in words is "thirteen million, two hundred thirteen thousand, four hundred five".