13312405 has 16 divisors (see below), whose sum is σ = 16329600. Its totient is φ = 10416832.

The previous prime is 13312399. The next prime is 13312433. The reversal of 13312405 is 50421331.

It is a cyclic number.

It is not a de Polignac number, because 13312405 - 2¹⁹ = 12788117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79632 + ... + 79798.

It is an arithmetic number, because the mean of its divisors is an integer number (1020600).

Almost surely, 2^13312405 is an apocalyptic number.

It is an amenable number.

13312405 is a deficient number, since it is larger than the sum of its proper divisors (3017195).

13312405 is a wasteful number, since it uses less digits than its factorization.

13312405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

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

The square root of 13312405 is about 3648.6168612229. The cubic root of 13312405 is about 237.0020889156.

Adding to 13312405 its reverse (50421331), we get a palindrome (63733736).

The spelling of 13312405 in words is "thirteen million, three hundred twelve thousand, four hundred five".