201310218 has 64 divisors (see below), whose sum is σ = 470707200. Its totient is φ = 63685440.

The previous prime is 201310217. The next prime is 201310273. The reversal of 201310218 is 812013102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201310218.

It is not an unprimeable number, because it can be changed into a prime (201310217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87588 + ... + 89856.

It is an arithmetic number, because the mean of its divisors is an integer number (7354800).

Almost surely, 2^201310218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201310218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235353600).

201310218 is an abundant number, since it is smaller than the sum of its proper divisors (269396982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201310218 is a wasteful number, since it uses less digits than its factorization.

201310218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 201310218 is about 14188.3832059893. The cubic root of 201310218 is about 586.0778026515.

The spelling of 201310218 in words is "two hundred one million, three hundred ten thousand, two hundred eighteen".