218234308 has 24 divisors (see below), whose sum is σ = 393329664. Its totient is φ = 105883200.

The previous prime is 218234299. The next prime is 218234329. The reversal of 218234308 is 803432812.

218234308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×218234308³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 218234308.

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, 27841 + ... + 34807.

It is an arithmetic number, because the mean of its divisors is an integer number (16388736).

Almost surely, 2^218234308 is an apocalyptic number.

It is an amenable number.

218234308 is a deficient number, since it is larger than the sum of its proper divisors (175095356).

218234308 is a wasteful number, since it uses less digits than its factorization.

218234308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7203 (or 7201 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 218234308 is about 14772.7555994134. The cubic root of 218234308 is about 602.0617111677.

The spelling of 218234308 in words is "two hundred eighteen million, two hundred thirty-four thousand, three hundred eight".