203434112 has 64 divisors (see below), whose sum is σ = 467649600. Its totient is φ = 86344704.

The previous prime is 203434111. The next prime is 203434129. The reversal of 203434112 is 211434302.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (203434111) 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, 96623 + ... + 98705.

It is an arithmetic number, because the mean of its divisors is an integer number (7307025).

Almost surely, 2^203434112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203434112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233824800).

203434112 is an abundant number, since it is smaller than the sum of its proper divisors (264215488).

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

203434112 is a wasteful number, since it uses less digits than its factorization.

203434112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213 (or 2201 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 203434112 is about 14263.0330575232. The cubic root of 203434112 is about 588.1317057309.

Adding to 203434112 its reverse (211434302), we get a palindrome (414868414).

The spelling of 203434112 in words is "two hundred three million, four hundred thirty-four thousand, one hundred twelve".