203312 has 20 divisors (see below), whose sum is σ = 401016. Its totient is φ = 99840.

The previous prime is 203311. The next prime is 203317. The reversal of 203312 is 213302.

It is a junction number, because it is equal to n+sod(n) for n = 203293 and 203302.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 203312.

It is not an unprimeable number, because it can be changed into a prime (203311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487 + ... + 1617.

2²⁰³³¹² is an apocalyptic number.

It is an amenable number.

203312 is a deficient number, since it is larger than the sum of its proper divisors (197704).

203312 is a wasteful number, since it uses less digits than its factorization.

203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 203312 is about 450.9013195811. The cubic root of 203312 is about 58.8014006176.

Adding to 203312 its reverse (213302), we get a palindrome (416614).

It can be divided in two parts, 203 and 312, that multiplied together give a palindrome (63336).

The spelling of 203312 in words is "two hundred three thousand, three hundred twelve", and thus it is an iban number.