213230004404 has 24 divisors (see below), whose sum is σ = 383469435720. Its totient is φ = 103670793216.

The previous prime is 213230004397. The next prime is 213230004413. The reversal of 213230004404 is 404400032312.

It can be written as a sum of positive squares in 4 ways, for example, as 7250181904 + 205979822500 = 85148^2 + 453850^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213230004404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189509 + ... + 679980.

It is an arithmetic number, because the mean of its divisors is an integer number (15977893155).

Almost surely, 2^213230004404 is an apocalyptic number.

It is an amenable number.

213230004404 is a deficient number, since it is larger than the sum of its proper divisors (170239431316).

213230004404 is a wasteful number, since it uses less digits than its factorization.

213230004404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871187 (or 871185 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 213230004404 its reverse (404400032312), we get a palindrome (617630036716).

The spelling of 213230004404 in words is "two hundred thirteen billion, two hundred thirty million, four thousand, four hundred four".