203342313243313 has 4 divisors (see below), whose sum is σ = 204943433820160. Its totient is φ = 201741192666468.

The previous prime is 203342313243263. The next prime is 203342313243323. The reversal of 203342313243313 is 313342313243302.

It is a happy number.

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 203342313243313 - 2¹⁷ = 203342313112241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203342313243323) 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, 800560288233 + ... + 800560288486.

It is an arithmetic number, because the mean of its divisors is an integer number (51235858455040).

Almost surely, 2^{203342313243313} is an apocalyptic number.

It is an amenable number.

203342313243313 is a deficient number, since it is larger than the sum of its proper divisors (1601120576847).

203342313243313 is a wasteful number, since it uses less digits than its factorization.

203342313243313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601120576846.

The product of its (nonzero) digits is 279936, while the sum is 37.

Adding to 203342313243313 its reverse (313342313243302), we get a palindrome (516684626486615).

The spelling of 203342313243313 in words is "two hundred three trillion, three hundred forty-two billion, three hundred thirteen million, two hundred forty-three thousand, three hundred thirteen".