203404441020 has 48 divisors (see below), whose sum is σ = 621308112768. Its totient is φ = 49310167360.

The previous prime is 203404440997. The next prime is 203404441021. The reversal of 203404441020 is 20144404302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203404441021) 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, 154093614 + ... + 154094933.

It is an arithmetic number, because the mean of its divisors is an integer number (12943919016).

Almost surely, 2^203404441020 is an apocalyptic number.

203404441020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203404441020 is an abundant number, since it is smaller than the sum of its proper divisors (417903671748).

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

203404441020 is a wasteful number, since it uses less digits than its factorization.

203404441020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308188570 (or 308188568 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 203404441020 its reverse (20144404302), we get a palindrome (223548845322).

The spelling of 203404441020 in words is "two hundred three billion, four hundred four million, four hundred forty-one thousand, twenty".