201242313 has 10 divisors (see below), whose sum is σ = 300621354. Its totient is φ = 134161488.

The previous prime is 201242291. The next prime is 201242317. The reversal of 201242313 is 313242102.

It can be written as a sum of positive squares in only one way, i.e., 186404409 + 14837904 = 13653^2 + 3852^2 .

It is not a de Polignac number, because 201242313 - 2¹⁶ = 201176777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201242317) 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 in 9 ways as a sum of consecutive naturals, for example, 1242156 + ... + 1242317.

Almost surely, 2^201242313 is an apocalyptic number.

It is an amenable number.

201242313 is a deficient number, since it is larger than the sum of its proper divisors (99379041).

201242313 is an equidigital number, since it uses as much as digits as its factorization.

201242313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484485 (or 2484476 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 201242313 is about 14185.9900253736. The cubic root of 201242313 is about 586.0118975868.

Adding to 201242313 its reverse (313242102), we get a palindrome (514484415).

The spelling of 201242313 in words is "two hundred one million, two hundred forty-two thousand, three hundred thirteen".