213930318 has 32 divisors (see below), whose sum is σ = 504760320. Its totient is φ = 59150880.

The previous prime is 213930293. The next prime is 213930331. The reversal of 213930318 is 813039312.

213930318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213930318² = 91532361919162248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 80853 + ... + 83456.

It is an arithmetic number, because the mean of its divisors is an integer number (15773760).

Almost surely, 2^213930318 is an apocalyptic number.

213930318 is an abundant number, since it is smaller than the sum of its proper divisors (290830002).

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

213930318 is a wasteful number, since it uses less digits than its factorization.

213930318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164352.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 213930318 is about 14626.3569626890. The cubic root of 213930318 is about 598.0774741814.

The spelling of 213930318 in words is "two hundred thirteen million, nine hundred thirty thousand, three hundred eighteen".