13311806 has 4 divisors (see below), whose sum is σ = 19967712. Its totient is φ = 6655902.

The previous prime is 13311787. The next prime is 13311817. The reversal of 13311806 is 60811331.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327950 + ... + 3327953.

It is an arithmetic number, because the mean of its divisors is an integer number (4991928).

Almost surely, 2^13311806 is an apocalyptic number.

13311806 is a deficient number, since it is larger than the sum of its proper divisors (6655906).

13311806 is an equidigital number, since it uses as much as digits as its factorization.

13311806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6655905.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 13311806 is about 3648.5347743992. The cubic root of 13311806 is about 236.9985341765.

The spelling of 13311806 in words is "thirteen million, three hundred eleven thousand, eight hundred six".