218371316 has 12 divisors (see below), whose sum is σ = 394477440. Its totient is φ = 105663480.

The previous prime is 218371261. The next prime is 218371319. The reversal of 218371316 is 613173812.

218371316 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218371319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880406 + ... + 880653.

It is an arithmetic number, because the mean of its divisors is an integer number (32873120).

Almost surely, 2^218371316 is an apocalyptic number.

It is an amenable number.

218371316 is a deficient number, since it is larger than the sum of its proper divisors (176106124).

218371316 is a wasteful number, since it uses less digits than its factorization.

218371316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761094 (or 1761092 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 218371316 is about 14777.3920567873. The cubic root of 218371316 is about 602.1876767194.

The spelling of 218371316 in words is "two hundred eighteen million, three hundred seventy-one thousand, three hundred sixteen".