203213213 has 16 divisors (see below), whose sum is σ = 239082624. Its totient is φ = 169076160.

The previous prime is 203213209. The next prime is 203213243. The reversal of 203213213 is 312312302.

203213213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 203213213 - 2² = 203213209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203213191 and 203213200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203213243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170606 + ... + 171792.

It is an arithmetic number, because the mean of its divisors is an integer number (14942664).

Almost surely, 2^203213213 is an apocalyptic number.

It is an amenable number.

203213213 is a deficient number, since it is larger than the sum of its proper divisors (35869411).

203213213 is a wasteful number, since it uses less digits than its factorization.

203213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 203213213 is about 14255.2871945815. The cubic root of 203213213 is about 587.9187542966.

Adding to 203213213 its reverse (312312302), we get a palindrome (515525515).

The spelling of 203213213 in words is "two hundred three million, two hundred thirteen thousand, two hundred thirteen".