136315187 has 2 divisors, whose sum is σ = 136315188. Its totient is φ = 136315186.

The previous prime is 136315147. The next prime is 136315213. The reversal of 136315187 is 781513631.

It is a strong prime.

It is an emirp because it is prime and its reverse (781513631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136315187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136315147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68157593 + 68157594.

It is an arithmetic number, because the mean of its divisors is an integer number (68157594).

Almost surely, 2^136315187 is an apocalyptic number.

136315187 is a deficient number, since it is larger than the sum of its proper divisors (1).

136315187 is an equidigital number, since it uses as much as digits as its factorization.

136315187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 136315187 is about 11675.4095003130. The cubic root of 136315187 is about 514.6532834557.

The spelling of 136315187 in words is "one hundred thirty-six million, three hundred fifteen thousand, one hundred eighty-seven".