12315187 has 2 divisors, whose sum is σ = 12315188. Its totient is φ = 12315186.

The previous prime is 12315161. The next prime is 12315209. The reversal of 12315187 is 78151321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12315187 - 2¹⁵ = 12282419 is a prime.

It is not a weakly prime, because it can be changed into another prime (12310187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157593 + 6157594.

It is an arithmetic number, because the mean of its divisors is an integer number (6157594).

Almost surely, 2^12315187 is an apocalyptic number.

12315187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315187 is an equidigital number, since it uses as much as digits as its factorization.

12315187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

The square root of 12315187 is about 3509.3000726641. The cubic root of 12315187 is about 230.9299900907.

The spelling of 12315187 in words is "twelve million, three hundred fifteen thousand, one hundred eighty-seven".