187080317 has 2 divisors, whose sum is σ = 187080318. Its totient is φ = 187080316.

The previous prime is 187080293. The next prime is 187080331. The reversal of 187080317 is 713080781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172685881 + 14394436 = 13141^2 + 3794^2 .

It is a cyclic number.

It is not a de Polignac number, because 187080317 - 2¹⁰ = 187079293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187080217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93540158 + 93540159.

It is an arithmetic number, because the mean of its divisors is an integer number (93540159).

Almost surely, 2^187080317 is an apocalyptic number.

It is an amenable number.

187080317 is a deficient number, since it is larger than the sum of its proper divisors (1).

187080317 is an equidigital number, since it uses as much as digits as its factorization.

187080317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 187080317 is about 13677.7306962815. The cubic root of 187080317 is about 571.9297648371.

The spelling of 187080317 in words is "one hundred eighty-seven million, eighty thousand, three hundred seventeen".