635040313 has 2 divisors, whose sum is σ = 635040314. Its totient is φ = 635040312.

The previous prime is 635040299. The next prime is 635040323. The reversal of 635040313 is 313040536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512207424 + 122832889 = 22632^2 + 11083^2 .

It is a cyclic number.

It is not a de Polignac number, because 635040313 - 2²¹ = 632943161 is a prime.

It is not a weakly prime, because it can be changed into another prime (635040323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317520156 + 317520157.

It is an arithmetic number, because the mean of its divisors is an integer number (317520157).

Almost surely, 2^635040313 is an apocalyptic number.

It is an amenable number.

635040313 is a deficient number, since it is larger than the sum of its proper divisors (1).

635040313 is an equidigital number, since it uses as much as digits as its factorization.

635040313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 635040313 is about 25200.0062103167. The cubic root of 635040313 is about 859.5419920164.

Adding to 635040313 its reverse (313040536), we get a palindrome (948080849).

The spelling of 635040313 in words is "six hundred thirty-five million, forty thousand, three hundred thirteen".