203031111212 has 12 divisors (see below), whose sum is σ = 355314221640. Its totient is φ = 101512762176.

The previous prime is 203031111203. The next prime is 203031111263. The reversal of 203031111212 is 212111130302.

203031111212 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 530333 + ... + 829044.

It is an arithmetic number, because the mean of its divisors is an integer number (29609518470).

Almost surely, 2^203031111212 is an apocalyptic number.

It is an amenable number.

203031111212 is a deficient number, since it is larger than the sum of its proper divisors (152283110428).

203031111212 is a wasteful number, since it uses less digits than its factorization.

203031111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396720 (or 1396718 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 203031111212 its reverse (212111130302), we get a palindrome (415142241514).

The spelling of 203031111212 in words is "two hundred three billion, thirty-one million, one hundred eleven thousand, two hundred twelve".