201331241 has 2 divisors, whose sum is σ = 201331242. Its totient is φ = 201331240.

The previous prime is 201331237. The next prime is 201331271. The reversal of 201331241 is 142133102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198105625 + 3225616 = 14075^2 + 1796^2 .

It is a cyclic number.

It is not a de Polignac number, because 201331241 - 2² = 201331237 is a prime.

It is not a weakly prime, because it can be changed into another prime (201331271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100665620 + 100665621.

It is an arithmetic number, because the mean of its divisors is an integer number (100665621).

Almost surely, 2^201331241 is an apocalyptic number.

It is an amenable number.

201331241 is a deficient number, since it is larger than the sum of its proper divisors (1).

201331241 is an equidigital number, since it uses as much as digits as its factorization.

201331241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 201331241 is about 14189.1240392069. The cubic root of 201331241 is about 586.0982034784.

Adding to 201331241 its reverse (142133102), we get a palindrome (343464343).

The spelling of 201331241 in words is "two hundred one million, three hundred thirty-one thousand, two hundred forty-one".