211434204 has 48 divisors (see below), whose sum is σ = 520513280. Its totient is φ = 66614400.

The previous prime is 211434203. The next prime is 211434221. The reversal of 211434204 is 402434112.

It is a super-2 number, since 2×211434204² = 89408845242227232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211434203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136257 + ... + 137799.

Almost surely, 2^211434204 is an apocalyptic number.

It is an amenable number.

211434204 is an abundant number, since it is smaller than the sum of its proper divisors (309079076).

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

211434204 is a wasteful number, since it uses less digits than its factorization.

211434204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 211434204 is about 14540.7772832129. Note that the first 3 decimals coincide. The cubic root of 211434204 is about 595.7422687872.

Adding to 211434204 its reverse (402434112), we get a palindrome (613868316).

The spelling of 211434204 in words is "two hundred eleven million, four hundred thirty-four thousand, two hundred four".