203123434204 has 12 divisors (see below), whose sum is σ = 361293321928. Its totient is φ = 99896770800.

The previous prime is 203123434201. The next prime is 203123434243. The reversal of 203123434204 is 402434321302.

It is a super-2 number, since 2×203123434204² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123434201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416236302 + ... + 416236789.

Almost surely, 2^203123434204 is an apocalyptic number.

It is an amenable number.

203123434204 is a deficient number, since it is larger than the sum of its proper divisors (158169887724).

203123434204 is a wasteful number, since it uses less digits than its factorization.

203123434204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832473156 (or 832473154 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 203123434204 its reverse (402434321302), we get a palindrome (605557755506).

The spelling of 203123434204 in words is "two hundred three billion, one hundred twenty-three million, four hundred thirty-four thousand, two hundred four".