203134212 has 72 divisors (see below), whose sum is σ = 534643200. Its totient is φ = 64951488.

The previous prime is 203134163. The next prime is 203134247. The reversal of 203134212 is 212431302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186333 + ... + 187419.

It is an arithmetic number, because the mean of its divisors is an integer number (7425600).

Almost surely, 2^203134212 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 203134212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267321600).

203134212 is an abundant number, since it is smaller than the sum of its proper divisors (331508988).

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

203134212 is a wasteful number, since it uses less digits than its factorization.

203134212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 203134212 is about 14252.5159884141. The cubic root of 203134212 is about 587.8425581528.

Adding to 203134212 its reverse (212431302), we get a palindrome (415565514).

The spelling of 203134212 in words is "two hundred three million, one hundred thirty-four thousand, two hundred twelve".