213204216 has 32 divisors (see below), whose sum is σ = 533388240. Its totient is φ = 71017728.

The previous prime is 213204197. The next prime is 213204221. The reversal of 213204216 is 612402312.

It is a junction number, because it is equal to n+sod(n) for n = 213204192 and 213204201.

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, 49210 + ... + 53366.

Almost surely, 2^213204216 is an apocalyptic number.

It is an amenable number.

213204216 is an abundant number, since it is smaller than the sum of its proper divisors (320184024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213204216 is a wasteful number, since it uses less digits than its factorization.

213204216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303 (or 6299 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 213204216 is about 14601.5141680581. The cubic root of 213204216 is about 597.4000612482.

Adding to 213204216 its reverse (612402312), we get a palindrome (825606528).

The spelling of 213204216 in words is "two hundred thirteen million, two hundred four thousand, two hundred sixteen".