203103030312 has 128 divisors (see below), whose sum is σ = 694369401600. Its totient is φ = 53565629184.

The previous prime is 203103030307. The next prime is 203103030329. The reversal of 203103030312 is 213030301302.

203103030312 is a `hidden beast` number, since 20 + 31 + 0 + 303 + 0 + 312 = 666.

203103030312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 5146783 + ... + 5186094.

It is an arithmetic number, because the mean of its divisors is an integer number (5424760950).

Almost surely, 2^203103030312 is an apocalyptic number.

It is an amenable number.

203103030312 is an abundant number, since it is smaller than the sum of its proper divisors (491266371288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203103030312 is a wasteful number, since it uses less digits than its factorization.

203103030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332912 (or 10332902 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 203103030312 its reverse (213030301302), we get a palindrome (416133331614).

The spelling of 203103030312 in words is "two hundred three billion, one hundred three million, thirty thousand, three hundred twelve".