203404303044 has 18 divisors (see below), whose sum is σ = 514160877230. Its totient is φ = 67801434336.

The previous prime is 203404303019. The next prime is 203404303079. The reversal of 203404303044 is 440303404302.

It can be written as a sum of positive squares in only one way, i.e., 182745990144 + 20658312900 = 427488^2 + 143730^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 203404302999 and 203404303017.

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 5 ways as a sum of consecutive naturals, for example, 2825059729 + ... + 2825059800.

Almost surely, 2^203404303044 is an apocalyptic number.

It is an amenable number.

203404303044 is an abundant number, since it is smaller than the sum of its proper divisors (310756574186).

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

203404303044 is a wasteful number, since it uses less digits than its factorization.

203404303044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650119539 (or 5650119534 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 203404303044 its reverse (440303404302), we get a palindrome (643707707346).

The spelling of 203404303044 in words is "two hundred three billion, four hundred four million, three hundred three thousand, forty-four".