203303144044 has 432 divisors, whose sum is σ = 522225398016. Its totient is φ = 68050886400.

The previous prime is 203303144027. The next prime is 203303144071. The reversal of 203303144044 is 440441303302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 718385527 + ... + 718385809.

It is an arithmetic number, because the mean of its divisors is an integer number (1208855088).

Almost surely, 2^203303144044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203303144044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261112699008).

203303144044 is an abundant number, since it is smaller than the sum of its proper divisors (318922253972).

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

203303144044 is a wasteful number, since it uses less digits than its factorization.

203303144044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 203303144044 its reverse (440441303302), we get a palindrome (643744447346).

The spelling of 203303144044 in words is "two hundred three billion, three hundred three million, one hundred forty-four thousand, forty-four".