203443312044 has 48 divisors (see below), whose sum is σ = 546156576000. Its totient is φ = 57736545216.

The previous prime is 203443312027. The next prime is 203443312049. The reversal of 203443312044 is 440213344302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (203443312049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8114814 + ... + 8139845.

It is an arithmetic number, because the mean of its divisors is an integer number (11378262000).

Almost surely, 2^203443312044 is an apocalyptic number.

It is an amenable number.

203443312044 is an abundant number, since it is smaller than the sum of its proper divisors (342713263956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203443312044 is a wasteful number, since it uses less digits than its factorization.

203443312044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16254822 (or 16254820 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 203443312044 its reverse (440213344302), we get a palindrome (643656656346).

The spelling of 203443312044 in words is "two hundred three billion, four hundred forty-three million, three hundred twelve thousand, forty-four".