203123312002 has 32 divisors (see below), whose sum is σ = 347715834480. Its totient is φ = 88308756480.

The previous prime is 203123311901. The next prime is 203123312003. The reversal of 203123312002 is 200213321302.

203123312002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 219010401 + 202904301601 = 14799^2 + 450449^2 .

It is not an unprimeable number, because it can be changed into a prime (203123312003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3254383 + ... + 3316210.

Almost surely, 2^203123312002 is an apocalyptic number.

203123312002 is a deficient number, since it is larger than the sum of its proper divisors (144592522478).

203123312002 is a wasteful number, since it uses less digits than its factorization.

203123312002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570678.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 203123312002 its reverse (200213321302), we get a palindrome (403336633304).

The spelling of 203123312002 in words is "two hundred three billion, one hundred twenty-three million, three hundred twelve thousand, two".