13218683 has 4 divisors (see below), whose sum is σ = 13227648. Its totient is φ = 13209720.

The previous prime is 13218671. The next prime is 13218697. The reversal of 13218683 is 38681231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13218683 - 2⁶ = 13218619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13218083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691 + ... + 5412.

It is an arithmetic number, because the mean of its divisors is an integer number (3306912).

Almost surely, 2^13218683 is an apocalyptic number.

13218683 is a deficient number, since it is larger than the sum of its proper divisors (8965).

13218683 is an equidigital number, since it uses as much as digits as its factorization.

13218683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8964.

The product of its digits is 6912, while the sum is 32.

The square root of 13218683 is about 3635.7506790208. The cubic root of 13218683 is about 236.4445978389. Note that the first 3 decimals are identical.

The spelling of 13218683 in words is "thirteen million, two hundred eighteen thousand, six hundred eighty-three".