211040171 has 2 divisors, whose sum is σ = 211040172. Its totient is φ = 211040170.

The previous prime is 211040149. The next prime is 211040183. The reversal of 211040171 is 171040112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211040171 - 2¹⁸ = 210778027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (211040131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105520085 + 105520086.

It is an arithmetic number, because the mean of its divisors is an integer number (105520086).

Almost surely, 2^211040171 is an apocalyptic number.

211040171 is a deficient number, since it is larger than the sum of its proper divisors (1).

211040171 is an equidigital number, since it uses as much as digits as its factorization.

211040171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 211040171 is about 14527.2217233716. The cubic root of 211040171 is about 595.3719595949.

Adding to 211040171 its reverse (171040112), we get a palindrome (382080283).

The spelling of 211040171 in words is "two hundred eleven million, forty thousand, one hundred seventy-one".