218323016 has 16 divisors (see below), whose sum is σ = 410112240. Its totient is φ = 108959760.

The previous prime is 218323013. The next prime is 218323019. The reversal of 218323016 is 610323812.

It is an interprime number because it is at equal distance from previous prime (218323013) and next prime (218323019).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (218323013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20570 + ... + 29321.

It is an arithmetic number, because the mean of its divisors is an integer number (25632015).

Almost surely, 2^218323016 is an apocalyptic number.

It is an amenable number.

218323016 is a deficient number, since it is larger than the sum of its proper divisors (191789224).

218323016 is a wasteful number, since it uses less digits than its factorization.

218323016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50444 (or 50440 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 218323016 is about 14775.7577132274. The cubic root of 218323016 is about 602.1432755743.

Adding to 218323016 its reverse (610323812), we get a palindrome (828646828).

The spelling of 218323016 in words is "two hundred eighteen million, three hundred twenty-three thousand, sixteen".