13317305 has 4 divisors (see below), whose sum is σ = 15980772. Its totient is φ = 10653840.

The previous prime is 13317287. The next prime is 13317323. The reversal of 13317305 is 50371331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50371331 = 1259 ⋅40009.

It is an interprime number because it is at equal distance from previous prime (13317287) and next prime (13317323).

It can be written as a sum of positive squares in 2 ways, for example, as 10106041 + 3211264 = 3179^2 + 1792^2 .

It is not a de Polignac number, because 13317305 - 2⁸ = 13317049 is a prime.

It is a super-2 number, since 2×13317305² = 354701224926050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331726 + ... + 1331735.

It is an arithmetic number, because the mean of its divisors is an integer number (3995193).

Almost surely, 2^13317305 is an apocalyptic number.

It is an amenable number.

13317305 is a deficient number, since it is larger than the sum of its proper divisors (2663467).

13317305 is an equidigital number, since it uses as much as digits as its factorization.

13317305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663466.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 13317305 is about 3649.2882867759. The cubic root of 13317305 is about 237.0311637467.

Adding to 13317305 its reverse (50371331), we get a palindrome (63688636).

The spelling of 13317305 in words is "thirteen million, three hundred seventeen thousand, three hundred five".