12318356 has 12 divisors (see below), whose sum is σ = 21748692. Its totient is φ = 6104448.

The previous prime is 12318349. The next prime is 12318379. The reversal of 12318356 is 65381321.

It can be written as a sum of positive squares in 2 ways, for example, as 2496400 + 9821956 = 1580^2 + 3134^2 .

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, 13175 + ... + 14078.

It is an arithmetic number, because the mean of its divisors is an integer number (1812391).

Almost surely, 2^12318356 is an apocalyptic number.

It is an amenable number.

12318356 is a deficient number, since it is larger than the sum of its proper divisors (9430336).

12318356 is a wasteful number, since it uses less digits than its factorization.

12318356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27370 (or 27368 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 12318356 is about 3509.7515581591. The cubic root of 12318356 is about 230.9497963774.

Adding to 12318356 its reverse (65381321), we get a palindrome (77699677).

The spelling of 12318356 in words is "twelve million, three hundred eighteen thousand, three hundred fifty-six".