213441404 has 12 divisors (see below), whose sum is σ = 407479128. Its totient is φ = 97018800.

The previous prime is 213441401. The next prime is 213441427. The reversal of 213441404 is 404144312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213441404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213441401) 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 3 ways as a sum of consecutive naturals, for example, 2425427 + ... + 2425514.

It is an arithmetic number, because the mean of its divisors is an integer number (33956594).

Almost surely, 2^213441404 is an apocalyptic number.

It is an amenable number.

213441404 is a deficient number, since it is larger than the sum of its proper divisors (194037724).

213441404 is a wasteful number, since it uses less digits than its factorization.

213441404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850956 (or 4850954 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 213441404 is about 14609.6339447640. The cubic root of 213441404 is about 597.6215134245.

Adding to 213441404 its reverse (404144312), we get a palindrome (617585716).

The spelling of 213441404 in words is "two hundred thirteen million, four hundred forty-one thousand, four hundred four".