213564213 has 12 divisors (see below), whose sum is σ = 310034400. Its totient is φ = 141659496.

The previous prime is 213564209. The next prime is 213564227. The reversal of 213564213 is 312465312.

213564213 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 642 + 13 = 666.

It is not a de Polignac number, because 213564213 - 2² = 213564209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213554213) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 57831 + ... + 61412.

It is an arithmetic number, because the mean of its divisors is an integer number (25836200).

Almost surely, 2^213564213 is an apocalyptic number.

It is an amenable number.

213564213 is a deficient number, since it is larger than the sum of its proper divisors (96470187).

213564213 is a wasteful number, since it uses less digits than its factorization.

213564213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119448 (or 119445 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 213564213 is about 14613.8363546332. The cubic root of 213564213 is about 597.7361104167.

The spelling of 213564213 in words is "two hundred thirteen million, five hundred sixty-four thousand, two hundred thirteen".