13318305 has 64 divisors (see below), whose sum is σ = 28643328. Its totient is φ = 5103360.

The previous prime is 13318301. The next prime is 13318307. The reversal of 13318305 is 50381331.

It is not a de Polignac number, because 13318305 - 2² = 13318301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13318301) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 14572 + ... + 15458.

It is an arithmetic number, because the mean of its divisors is an integer number (447552).

Almost surely, 2^13318305 is an apocalyptic number.

13318305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13318305 is an abundant number, since it is smaller than the sum of its proper divisors (15325023).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13318305 is a wasteful number, since it uses less digits than its factorization.

13318305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13318305 is about 3649.4252972215. The cubic root of 13318305 is about 237.0370965094.

Adding to 13318305 its reverse (50381331), we get a palindrome (63699636).

The spelling of 13318305 in words is "thirteen million, three hundred eighteen thousand, three hundred five".