203240512112 has 40 divisors (see below), whose sum is σ = 443433856512. Its totient is φ = 89401982400.

The previous prime is 203240512049. The next prime is 203240512117. The reversal of 203240512112 is 211215042302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203240512117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18619958 + ... + 18630869.

Almost surely, 2^203240512112 is an apocalyptic number.

203240512112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203240512112 is an abundant number, since it is smaller than the sum of its proper divisors (240193344400).

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

203240512112 is a wasteful number, since it uses less digits than its factorization.

203240512112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37250877 (or 37250871 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 203240512112 its reverse (211215042302), we get a palindrome (414455554414).

The spelling of 203240512112 in words is "two hundred three billion, two hundred forty million, five hundred twelve thousand, one hundred twelve".