201343042091 has 2 divisors, whose sum is σ = 201343042092. Its totient is φ = 201343042090.

The previous prime is 201343042079. The next prime is 201343042099. The reversal of 201343042091 is 190240343102.

201343042091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201343042091 - 2²⁶ = 201275933227 is a prime.

It is not a weakly prime, because it can be changed into another prime (201343042099) 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, 100671521045 + 100671521046.

It is an arithmetic number, because the mean of its divisors is an integer number (100671521046).

Almost surely, 2^201343042091 is an apocalyptic number.

201343042091 is a deficient number, since it is larger than the sum of its proper divisors (1).

201343042091 is an equidigital number, since it uses as much as digits as its factorization.

201343042091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 201343042091 its reverse (190240343102), we get a palindrome (391583385193).

The spelling of 201343042091 in words is "two hundred one billion, three hundred forty-three million, forty-two thousand, ninety-one".