201243343313 has 4 divisors (see below), whose sum is σ = 201653208048. Its totient is φ = 200833478580.

The previous prime is 201243343303. The next prime is 201243343319. The reversal of 201243343313 is 313343342102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201243343313 - 2²² = 201239149009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201243343319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204931631 + ... + 204932612.

It is an arithmetic number, because the mean of its divisors is an integer number (50413302012).

Almost surely, 2^201243343313 is an apocalyptic number.

It is an amenable number.

201243343313 is a deficient number, since it is larger than the sum of its proper divisors (409864735).

201243343313 is an equidigital number, since it uses as much as digits as its factorization.

201243343313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409864734.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 201243343313 its reverse (313343342102), we get a palindrome (514586685415).

The spelling of 201243343313 in words is "two hundred one billion, two hundred forty-three million, three hundred forty-three thousand, three hundred thirteen".