11387171 has 2 divisors, whose sum is σ = 11387172. Its totient is φ = 11387170.

The previous prime is 11387143. The next prime is 11387179. The reversal of 11387171 is 17178311.

11387171 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (17178311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11387171 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11387179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5693585 + 5693586.

It is an arithmetic number, because the mean of its divisors is an integer number (5693586).

Almost surely, 2^11387171 is an apocalyptic number.

11387171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11387171 is an equidigital number, since it uses as much as digits as its factorization.

11387171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 29.

The square root of 11387171 is about 3374.4882574992. The cubic root of 11387171 is about 224.9772553140.

The spelling of 11387171 in words is "eleven million, three hundred eighty-seven thousand, one hundred seventy-one".