13318 has 4 divisors (see below), whose sum is σ = 19980.
Its totient is φ = 6658.
The previous prime is 13313. The next prime is 13327. The reversal of 13318 is 81331.
Adding to 13318 its reverse (81331), we get a palindrome (94649).
It can be divided in two parts, 1331 and 8, that multiplied together give a cube (10648 = 223).
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13313) by changing a digit.
13318 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3328 + ... + 3331.
It is an arithmetic number, because the mean of its divisors is an integer number (4995).
213318 is an apocalyptic number.
13318 is a deficient number, since it is larger than the sum of its proper divisors (6662).
13318 is an equidigital number, since it uses as much as digits as its factorization.
13318 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6661.
The product of its digits is 72, while the sum is 16.
The square root of 13318 is about 115.4036394573.
The cubic root of 13318 is about 23.7035287048.
The spelling of 13318 in words is "thirteen thousand, three hundred eighteen".