213241204 has 18 divisors (see below), whose sum is σ = 410181842. Its totient is φ = 96927600.

The previous prime is 213241159. The next prime is 213241213. The reversal of 213241204 is 402142312.

213241204 = 2526² + 2527² + ... + 2558².

It can be written as a sum of positive squares in only one way, i.e., 192099600 + 21141604 = 13860^2 + 4598^2 .

It is a super-2 number, since 2×213241204² = 90943622166739232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219807 + ... + 220774.

Almost surely, 2^213241204 is an apocalyptic number.

It is an amenable number.

213241204 is a deficient number, since it is larger than the sum of its proper divisors (196940638).

213241204 is a wasteful number, since it uses less digits than its factorization.

213241204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440607 (or 440594 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 213241204 is about 14602.7806941007. The cubic root of 213241204 is about 597.4346061494.

Adding to 213241204 its reverse (402142312), we get a palindrome (615383516).

The spelling of 213241204 in words is "two hundred thirteen million, two hundred forty-one thousand, two hundred four".