213244304 has 80 divisors (see below), whose sum is σ = 512133888. Its totient is φ = 83759616.

The previous prime is 213244237. The next prime is 213244313. The reversal of 213244304 is 403442312.

213244304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213244304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242714 + ... + 243590.

Almost surely, 2^213244304 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 213244304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256066944).

213244304 is an abundant number, since it is smaller than the sum of its proper divisors (298889584).

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

213244304 is a wasteful number, since it uses less digits than its factorization.

213244304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 213244304 is about 14602.8868378824. The cubic root of 213244304 is about 597.4375012095.

Adding to 213244304 its reverse (403442312), we get a palindrome (616686616).

The spelling of 213244304 in words is "two hundred thirteen million, two hundred forty-four thousand, three hundred four".