203020521404 has 12 divisors (see below), whose sum is σ = 376185083904. Its totient is φ = 95539068864.

The previous prime is 203020521383. The next prime is 203020521413. The reversal of 203020521404 is 404125020302.

It is a happy number.

203020521404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×203020521404² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203020521404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492797884 + ... + 1492798019.

It is an arithmetic number, because the mean of its divisors is an integer number (31348756992).

Almost surely, 2^203020521404 is an apocalyptic number.

It is an amenable number.

203020521404 is a deficient number, since it is larger than the sum of its proper divisors (173164562500).

203020521404 is a wasteful number, since it uses less digits than its factorization.

203020521404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985595924 (or 2985595922 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 203020521404 its reverse (404125020302), we get a palindrome (607145541706).

The spelling of 203020521404 in words is "two hundred three billion, twenty million, five hundred twenty-one thousand, four hundred four".