201140171 has 2 divisors, whose sum is σ = 201140172. Its totient is φ = 201140170.

The previous prime is 201140131. The next prime is 201140237. The reversal of 201140171 is 171041102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201140171 - 2²⁶ = 134031307 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 (201140101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100570085 + 100570086.

It is an arithmetic number, because the mean of its divisors is an integer number (100570086).

Almost surely, 2^201140171 is an apocalyptic number.

201140171 is a deficient number, since it is larger than the sum of its proper divisors (1).

201140171 is an equidigital number, since it uses as much as digits as its factorization.

201140171 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 201140171 is about 14182.3894672231. The cubic root of 201140171 is about 585.9127359409.

Adding to 201140171 its reverse (171041102), we get a palindrome (372181273).

The spelling of 201140171 in words is "two hundred one million, one hundred forty thousand, one hundred seventy-one".