203123321312 has 12 divisors (see below), whose sum is σ = 399899038896. Its totient is φ = 101561660640.

The previous prime is 203123321257. The next prime is 203123321329. The reversal of 203123321312 is 213123321302.

203123321312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3173801864 + ... + 3173801927.

It is an arithmetic number, because the mean of its divisors is an integer number (33324919908).

Almost surely, 2^203123321312 is an apocalyptic number.

It is an amenable number.

203123321312 is a deficient number, since it is larger than the sum of its proper divisors (196775717584).

203123321312 is an equidigital number, since it uses as much as digits as its factorization.

203123321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6347603801 (or 6347603793 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 203123321312 its reverse (213123321302), we get a palindrome (416246642614).

The spelling of 203123321312 in words is "two hundred three billion, one hundred twenty-three million, three hundred twenty-one thousand, three hundred twelve".