201230291 has 2 divisors, whose sum is σ = 201230292. Its totient is φ = 201230290.

The previous prime is 201230219. The next prime is 201230327. The reversal of 201230291 is 192032102.

Together with previous prime (201230219) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201230291 - 2¹⁸ = 200968147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201230191) 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, 100615145 + 100615146.

It is an arithmetic number, because the mean of its divisors is an integer number (100615146).

Almost surely, 2^201230291 is an apocalyptic number.

201230291 is a deficient number, since it is larger than the sum of its proper divisors (1).

201230291 is an equidigital number, since it uses as much as digits as its factorization.

201230291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 201230291 is about 14185.5662911285. The cubic root of 201230291 is about 586.0002281136. Note that the first 3 decimals are identical.

Adding to 201230291 its reverse (192032102), we get a palindrome (393262393).

The spelling of 201230291 in words is "two hundred one million, two hundred thirty thousand, two hundred ninety-one".