203112300313 has 4 divisors (see below), whose sum is σ = 218736323428. Its totient is φ = 187488277200.

The previous prime is 203112300269. The next prime is 203112300319. The reversal of 203112300313 is 313003211302.

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 65888729344 + 137223570969 = 256688^2 + 370437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203112300313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203112300319) 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, 7812011538 + ... + 7812011563.

It is an arithmetic number, because the mean of its divisors is an integer number (54684080857).

Almost surely, 2^203112300313 is an apocalyptic number.

It is an amenable number.

203112300313 is a deficient number, since it is larger than the sum of its proper divisors (15624023115).

203112300313 is a wasteful number, since it uses less digits than its factorization.

203112300313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15624023114.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 203112300313 its reverse (313003211302), we get a palindrome (516115511615).

The spelling of 203112300313 in words is "two hundred three billion, one hundred twelve million, three hundred thousand, three hundred thirteen".