12187316 has 6 divisors (see below), whose sum is σ = 21327810. Its totient is φ = 6093656.

The previous prime is 12187313. The next prime is 12187321. The reversal of 12187316 is 61378121.

It can be written as a sum of positive squares in only one way, i.e., 6522916 + 5664400 = 2554^2 + 2380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12187313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1523411 + ... + 1523418.

It is an arithmetic number, because the mean of its divisors is an integer number (3554635).

Almost surely, 2^12187316 is an apocalyptic number.

It is an amenable number.

12187316 is a deficient number, since it is larger than the sum of its proper divisors (9140494).

12187316 is a wasteful number, since it uses less digits than its factorization.

12187316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046833 (or 3046831 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 12187316 is about 3491.0336578154. The cubic root of 12187316 is about 230.1279439373.

The spelling of 12187316 in words is "twelve million, one hundred eighty-seven thousand, three hundred sixteen".