203321012 has 12 divisors (see below), whose sum is σ = 371282016. Its totient is φ = 97240440.

The previous prime is 203321011. The next prime is 203321017. The reversal of 203321012 is 210123302.

It is a happy number.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203321011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104914 + ... + 1105097.

It is an arithmetic number, because the mean of its divisors is an integer number (30940168).

Almost surely, 2^203321012 is an apocalyptic number.

It is an amenable number.

203321012 is a deficient number, since it is larger than the sum of its proper divisors (167961004).

203321012 is a wasteful number, since it uses less digits than its factorization.

203321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210038 (or 2210036 counting only the distinct ones).

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

The square root of 203321012 is about 14259.0677114600. The cubic root of 203321012 is about 588.0226941431.

Adding to 203321012 its reverse (210123302), we get a palindrome (413444314).

The spelling of 203321012 in words is "two hundred three million, three hundred twenty-one thousand, twelve".