203218 has 16 divisors (see below), whose sum is σ = 332640. Its totient is φ = 92736.

The previous prime is 203213. The next prime is 203221. The reversal of 203218 is 812302.

It is a happy number.

203218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (203213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (20790).

2²⁰³²¹⁸ is an apocalyptic number.

203218 is a deficient number, since it is larger than the sum of its proper divisors (129422).

203218 is a wasteful number, since it uses less digits than its factorization.

203218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 203218 is about 450.7970718627. The cubic root of 203218 is about 58.7923370704.

The spelling of 203218 in words is "two hundred three thousand, two hundred eighteen".