187130971 has 2 divisors, whose sum is σ = 187130972. Its totient is φ = 187130970.

The previous prime is 187130963. The next prime is 187130987. The reversal of 187130971 is 179031781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 187130971 - 2³ = 187130963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 187130971.

It is not a weakly prime, because it can be changed into another prime (187140971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93565485 + 93565486.

It is an arithmetic number, because the mean of its divisors is an integer number (93565486).

Almost surely, 2^187130971 is an apocalyptic number.

187130971 is a deficient number, since it is larger than the sum of its proper divisors (1).

187130971 is an equidigital number, since it uses as much as digits as its factorization.

187130971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 187130971 is about 13679.5822670139. The cubic root of 187130971 is about 571.9813788826.

The spelling of 187130971 in words is "one hundred eighty-seven million, one hundred thirty thousand, nine hundred seventy-one".