13318337 has 8 divisors (see below), whose sum is σ = 13827240. Its totient is φ = 12812800.

The previous prime is 13318321. The next prime is 13318367. The reversal of 13318337 is 73381331.

It can be written as a sum of positive squares in 4 ways, for example, as 3136 + 13315201 = 56^2 + 3649^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13318337 - 2⁴ = 13318321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13318307) 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 7 ways as a sum of consecutive naturals, for example, 9587 + ... + 10887.

It is an arithmetic number, because the mean of its divisors is an integer number (1728405).

Almost surely, 2^13318337 is an apocalyptic number.

It is an amenable number.

13318337 is a deficient number, since it is larger than the sum of its proper divisors (508903).

13318337 is a wasteful number, since it uses less digits than its factorization.

13318337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683.

The product of its digits is 4536, while the sum is 29.

The square root of 13318337 is about 3649.4296814708. The cubic root of 13318337 is about 237.0372863529.

Adding to 13318337 its reverse (73381331), we get a palindrome (86699668).

The spelling of 13318337 in words is "thirteen million, three hundred eighteen thousand, three hundred thirty-seven".