213305530 has 32 divisors (see below), whose sum is σ = 391104000. Its totient is φ = 83745792.

The previous prime is 213305501. The next prime is 213305537. The reversal of 213305530 is 35503312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213305537) 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, 151771 + ... + 153169.

It is an arithmetic number, because the mean of its divisors is an integer number (12222000).

Almost surely, 2^213305530 is an apocalyptic number.

213305530 is a deficient number, since it is larger than the sum of its proper divisors (177798470).

213305530 is a wasteful number, since it uses less digits than its factorization.

213305530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 213305530 is about 14604.9830537389. The cubic root of 213305530 is about 597.4946738319.

Adding to 213305530 its reverse (35503312), we get a palindrome (248808842).

The spelling of 213305530 in words is "two hundred thirteen million, three hundred five thousand, five hundred thirty".