203312102331313 has 4 divisors (see below), whose sum is σ = 203312132891428. Its totient is φ = 203312071771200.

The previous prime is 203312102331197. The next prime is 203312102331379. The reversal of 203312102331313 is 313133201213302.

It is a happy number.

203312102331313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124380107571889 + 78931994759424 = 11152583^2 + 8884368^2 .

It is a cyclic number.

It is not a de Polignac number, because 203312102331313 - 2¹⁷ = 203312102200241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203312102331413) 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, 598788 + ... + 20173813.

It is an arithmetic number, because the mean of its divisors is an integer number (50828033222857).

Almost surely, 2^{203312102331313} is an apocalyptic number.

It is an amenable number.

203312102331313 is a deficient number, since it is larger than the sum of its proper divisors (30560115).

203312102331313 is an equidigital number, since it uses as much as digits as its factorization.

203312102331313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30560114.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 203312102331313 its reverse (313133201213302), we get a palindrome (516445303544615).

The spelling of 203312102331313 in words is "two hundred three trillion, three hundred twelve billion, one hundred two million, three hundred thirty-one thousand, three hundred thirteen".