218301136 has 20 divisors (see below), whose sum is σ = 423748672. Its totient is φ = 108946656.

The previous prime is 218301113. The next prime is 218301137. The reversal of 218301136 is 631103812.

It is a self number, because there is not a number n which added to its sum of digits gives 218301136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218301137) 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, 3720 + ... + 21223.

Almost surely, 2^218301136 is an apocalyptic number.

It is an amenable number.

218301136 is a deficient number, since it is larger than the sum of its proper divisors (205447536).

218301136 is a wasteful number, since it uses less digits than its factorization.

218301136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25498 (or 25492 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 218301136 is about 14775.0172927141. The cubic root of 218301136 is about 602.1231596084.

Adding to 218301136 its reverse (631103812), we get a palindrome (849404948).

The spelling of 218301136 in words is "two hundred eighteen million, three hundred one thousand, one hundred thirty-six".