213244330 has 64 divisors (see below), whose sum is σ = 424116000. Its totient is φ = 76723200.

The previous prime is 213244327. The next prime is 213244331. The reversal of 213244330 is 33442312.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 18948609 + 194295721 = 4353^2 + 13939^2 .

It is not an unprimeable number, because it can be changed into a prime (213244331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1431096 + ... + 1431244.

Almost surely, 2^213244330 is an apocalyptic number.

213244330 is a deficient number, since it is larger than the sum of its proper divisors (210871670).

213244330 is a wasteful number, since it uses less digits than its factorization.

213244330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 213244330 is about 14602.8877281173. The cubic root of 213244330 is about 597.4375254906.

Adding to 213244330 its reverse (33442312), we get a palindrome (246686642).

The spelling of 213244330 in words is "two hundred thirteen million, two hundred forty-four thousand, three hundred thirty".