203423023434 has 64 divisors (see below), whose sum is σ = 446617635840. Its totient is φ = 61490396160.

The previous prime is 203423023421. The next prime is 203423023487. The reversal of 203423023434 is 434320324302.

203423023434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 583632 + ... + 864564.

It is an arithmetic number, because the mean of its divisors is an integer number (6978400560).

Almost surely, 2^203423023434 is an apocalyptic number.

203423023434 is an abundant number, since it is smaller than the sum of its proper divisors (243194612406).

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

203423023434 is a wasteful number, since it uses less digits than its factorization.

203423023434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281215.

The product of its (nonzero) digits is 41472, while the sum is 30.

Adding to 203423023434 its reverse (434320324302), we get a palindrome (637743347736).

The spelling of 203423023434 in words is "two hundred three billion, four hundred twenty-three million, twenty-three thousand, four hundred thirty-four".