13318813 has 8 divisors (see below), whose sum is σ = 13668480. Its totient is φ = 12972000.

The previous prime is 13318807. The next prime is 13318843. The reversal of 13318813 is 31881331.

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

It is not a de Polignac number, because 13318813 - 2⁹ = 13318301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13318843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11233 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (1708560).

Almost surely, 2^13318813 is an apocalyptic number.

It is an amenable number.

13318813 is a deficient number, since it is larger than the sum of its proper divisors (349667).

13318813 is a wasteful number, since it uses less digits than its factorization.

13318813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its digits is 1728, while the sum is 28.

The square root of 13318813 is about 3649.4948965576. The cubic root of 13318813 is about 237.0401102391.

Adding to 13318813 its product of digits (1728), we get a triangular number (13320541 = T₅₁₆₁).

The spelling of 13318813 in words is "thirteen million, three hundred eighteen thousand, eight hundred thirteen".