213130066 has 24 divisors (see below), whose sum is σ = 331878960. Its totient is φ = 102622416.

The previous prime is 213130063. The next prime is 213130067. The reversal of 213130066 is 660031312.

It is not an unprimeable number, because it can be changed into a prime (213130063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331141 + ... + 331783.

It is an arithmetic number, because the mean of its divisors is an integer number (13828290).

Almost surely, 2^213130066 is an apocalyptic number.

213130066 is a deficient number, since it is larger than the sum of its proper divisors (118748894).

213130066 is an equidigital number, since it uses as much as digits as its factorization.

213130066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 213130066 is about 14598.9748270212. The cubic root of 213130066 is about 597.3307969035.

Adding to 213130066 its reverse (660031312), we get a palindrome (873161378).

The spelling of 213130066 in words is "two hundred thirteen million, one hundred thirty thousand, sixty-six".