203403100404 has 96 divisors (see below), whose sum is σ = 557973176320. Its totient is φ = 56452609152.

The previous prime is 203403100399. The next prime is 203403100451. The reversal of 203403100404 is 404001304302.

203403100404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1870989 + ... + 1976715.

Almost surely, 2^203403100404 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 203403100404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278986588160).

203403100404 is an abundant number, since it is smaller than the sum of its proper divisors (354570075916).

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

203403100404 is a wasteful number, since it uses less digits than its factorization.

203403100404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106397 (or 106395 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 203403100404 its reverse (404001304302), we get a palindrome (607404404706).

The spelling of 203403100404 in words is "two hundred three billion, four hundred three million, one hundred thousand, four hundred four".