203023434012 has 72 divisors (see below), whose sum is σ = 555086188944. Its totient is φ = 57583266048.

The previous prime is 203023433983. The next prime is 203023434013. The reversal of 203023434012 is 210434320302.

It is a super-2 number, since 2×203023434012² (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 (203023434013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1179583 + ... + 1340694.

It is an arithmetic number, because the mean of its divisors is an integer number (7709530402).

Almost surely, 2^203023434012 is an apocalyptic number.

It is an amenable number.

203023434012 is an abundant number, since it is smaller than the sum of its proper divisors (352062754932).

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

203023434012 is a wasteful number, since it uses less digits than its factorization.

203023434012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520435 (or 2520426 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 203023434012 its reverse (210434320302), we get a palindrome (413457754314).

The spelling of 203023434012 in words is "two hundred three billion, twenty-three million, four hundred thirty-four thousand, twelve".