211345304 has 16 divisors (see below), whose sum is σ = 396520800. Its totient is φ = 105606432.

The previous prime is 211345289. The next prime is 211345319. The reversal of 211345304 is 403543112.

211345304 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211345289) and next prime (211345319).

It is a self number, because there is not a number n which added to its sum of digits gives 211345304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6929 + ... + 21695.

It is an arithmetic number, because the mean of its divisors is an integer number (24782550).

Almost surely, 2^211345304 is an apocalyptic number.

It is an amenable number.

211345304 is a deficient number, since it is larger than the sum of its proper divisors (185175496).

211345304 is a wasteful number, since it uses less digits than its factorization.

211345304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16562 (or 16558 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 211345304 is about 14537.7200413270. The cubic root of 211345304 is about 595.6587614656.

Adding to 211345304 its reverse (403543112), we get a palindrome (614888416).

The spelling of 211345304 in words is "two hundred eleven million, three hundred forty-five thousand, three hundred four".