12131318 has 8 divisors (see below), whose sum is σ = 18212160. Its totient is φ = 6060600.

The previous prime is 12131303. The next prime is 12131321. The reversal of 12131318 is 81313121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12131318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (2276520).

Almost surely, 2^12131318 is an apocalyptic number.

12131318 is a deficient number, since it is larger than the sum of its proper divisors (6080842).

12131318 is a wasteful number, since it uses less digits than its factorization.

12131318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062.

The product of its digits is 144, while the sum is 20.

The square root of 12131318 is about 3483.0041630753. The cubic root of 12131318 is about 229.7749405273.

Adding to 12131318 its reverse (81313121), we get a palindrome (93444439).

The spelling of 12131318 in words is "twelve million, one hundred thirty-one thousand, three hundred eighteen".