201324161 has 2 divisors, whose sum is σ = 201324162. Its totient is φ = 201324160.

The previous prime is 201324113. The next prime is 201324187. The reversal of 201324161 is 161423102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167857936 + 33466225 = 12956^2 + 5785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201324161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201324191) 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, 100662080 + 100662081.

It is an arithmetic number, because the mean of its divisors is an integer number (100662081).

Almost surely, 2^201324161 is an apocalyptic number.

It is an amenable number.

201324161 is a deficient number, since it is larger than the sum of its proper divisors (1).

201324161 is an equidigital number, since it uses as much as digits as its factorization.

201324161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 201324161 is about 14188.8745501537. The cubic root of 201324161 is about 586.0913331687.

Adding to 201324161 its reverse (161423102), we get a palindrome (362747263).

The spelling of 201324161 in words is "two hundred one million, three hundred twenty-four thousand, one hundred sixty-one".