203123314434 has 32 divisors (see below), whose sum is σ = 406964479680. Its totient is φ = 67588206912.

The previous prime is 203123314399. The next prime is 203123314447. The reversal of 203123314434 is 434413321302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12997077 + ... + 13012695.

It is an arithmetic number, because the mean of its divisors is an integer number (12717639990).

Almost surely, 2^203123314434 is an apocalyptic number.

203123314434 is an abundant number, since it is smaller than the sum of its proper divisors (203841165246).

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

203123314434 is a wasteful number, since it uses less digits than its factorization.

203123314434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19314.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 203123314434 its reverse (434413321302), we get a palindrome (637536635736).

The spelling of 203123314434 in words is "two hundred three billion, one hundred twenty-three million, three hundred fourteen thousand, four hundred thirty-four".