203421044403 has 12 divisors (see below), whose sum is σ = 295059816480. Its totient is φ = 135046605456.

The previous prime is 203421044339. The next prime is 203421044471. The reversal of 203421044403 is 304440124302.

It is a happy number.

203421044403 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 210 + 4 + 440 + 3 = 666.

It is not a de Polignac number, because 203421044403 - 2⁶ = 203421044339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203421044483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47283076 + ... + 47287377.

It is an arithmetic number, because the mean of its divisors is an integer number (24588318040).

Almost surely, 2^203421044403 is an apocalyptic number.

203421044403 is a deficient number, since it is larger than the sum of its proper divisors (91638772077).

203421044403 is a wasteful number, since it uses less digits than its factorization.

203421044403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94570698 (or 94570695 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 203421044403 its reverse (304440124302), we get a palindrome (507861168705).

The spelling of 203421044403 in words is "two hundred three billion, four hundred twenty-one million, forty-four thousand, four hundred three".