203312012 has 12 divisors (see below), whose sum is σ = 367273536. Its totient is φ = 98376720.

The previous prime is 203311991. The next prime is 203312033. The reversal of 203312012 is 210213302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (203311991) and next prime (203312033).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819683 + ... + 819930.

It is an arithmetic number, because the mean of its divisors is an integer number (30606128).

Almost surely, 2^203312012 is an apocalyptic number.

It is an amenable number.

203312012 is a deficient number, since it is larger than the sum of its proper divisors (163961524).

203312012 is a wasteful number, since it uses less digits than its factorization.

203312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639648 (or 1639646 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 203312012 is about 14258.7521193125. The cubic root of 203312012 is about 588.0140177447.

Adding to 203312012 its reverse (210213302), we get a palindrome (413525314).

The spelling of 203312012 in words is "two hundred three million, three hundred twelve thousand, twelve".