213131230 has 16 divisors (see below), whose sum is σ = 413146944. Its totient is φ = 78694560.

The previous prime is 213131209. The next prime is 213131249. The reversal of 213131230 is 32131312.

213131230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819606 + ... + 819865.

It is an arithmetic number, because the mean of its divisors is an integer number (25821684).

Almost surely, 2^213131230 is an apocalyptic number.

213131230 is a deficient number, since it is larger than the sum of its proper divisors (200015714).

213131230 is a wasteful number, since it uses less digits than its factorization.

213131230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639491.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213131230 is about 14599.0146927798. The cubic root of 213131230 is about 597.3318843331.

Adding to 213131230 its reverse (32131312), we get a palindrome (245262542).

The spelling of 213131230 in words is "two hundred thirteen million, one hundred thirty-one thousand, two hundred thirty".