213440204 has 12 divisors (see below), whose sum is σ = 375071928. Its totient is φ = 106276800.

The previous prime is 213440179. The next prime is 213440209. The reversal of 213440204 is 402044312.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (213440209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109742 + ... + 111669.

It is an arithmetic number, because the mean of its divisors is an integer number (31255994).

Almost surely, 2^213440204 is an apocalyptic number.

It is an amenable number.

213440204 is a deficient number, since it is larger than the sum of its proper divisors (161631724).

213440204 is a wasteful number, since it uses less digits than its factorization.

213440204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221656 (or 221654 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 213440204 is about 14609.5928759155. The cubic root of 213440204 is about 597.6203934494.

Adding to 213440204 its reverse (402044312), we get a palindrome (615484516).

The spelling of 213440204 in words is "two hundred thirteen million, four hundred forty thousand, two hundred four".