12318337 has 4 divisors (see below), whose sum is σ = 12328240. Its totient is φ = 12308436.

The previous prime is 12318329. The next prime is 12318343. The reversal of 12318337 is 73381321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12318337 - 2³ = 12318329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12318347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2763 + ... + 5680.

It is an arithmetic number, because the mean of its divisors is an integer number (3082060).

Almost surely, 2^12318337 is an apocalyptic number.

It is an amenable number.

12318337 is a deficient number, since it is larger than the sum of its proper divisors (9903).

12318337 is an equidigital number, since it uses as much as digits as its factorization.

12318337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902.

The product of its digits is 3024, while the sum is 28.

The square root of 12318337 is about 3509.7488514137. The cubic root of 12318337 is about 230.9496776373.

Adding to 12318337 its reverse (73381321), we get a palindrome (85699658).

The spelling of 12318337 in words is "twelve million, three hundred eighteen thousand, three hundred thirty-seven".