213412218 has 32 divisors (see below), whose sum is σ = 464788800. Its totient is φ = 65068416.

The previous prime is 213412211. The next prime is 213412261. The reversal of 213412218 is 812214312.

It is not an unprimeable number, because it can be changed into a prime (213412211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28971 + ... + 35582.

It is an arithmetic number, because the mean of its divisors is an integer number (14524650).

Almost surely, 2^213412218 is an apocalyptic number.

213412218 is an abundant number, since it is smaller than the sum of its proper divisors (251376582).

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

213412218 is a wasteful number, since it uses less digits than its factorization.

213412218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64606.

The product of its digits is 768, while the sum is 24.

The square root of 213412218 is about 14608.6350491755. The cubic root of 213412218 is about 597.5942725733.

The spelling of 213412218 in words is "two hundred thirteen million, four hundred twelve thousand, two hundred eighteen".