213306244 has 6 divisors (see below), whose sum is σ = 373285934. Its totient is φ = 106653120.

The previous prime is 213306239. The next prime is 213306253. The reversal of 213306244 is 442603312.

213306244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 212051844 + 1254400 = 14562^2 + 1120^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26663277 + ... + 26663284.

Almost surely, 2^213306244 is an apocalyptic number.

It is an amenable number.

213306244 is a deficient number, since it is larger than the sum of its proper divisors (159979690).

213306244 is a wasteful number, since it uses less digits than its factorization.

213306244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53326565 (or 53326563 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 213306244 is about 14605.0074974305. The cubic root of 213306244 is about 597.4953404981.

Adding to 213306244 its reverse (442603312), we get a palindrome (655909556).

The spelling of 213306244 in words is "two hundred thirteen million, three hundred six thousand, two hundred forty-four".