213313668 has 24 divisors (see below), whose sum is σ = 498120672. Its totient is φ = 71049024.

The previous prime is 213313657. The next prime is 213313673. The reversal of 213313668 is 866313312.

It is a super-4 number, since 4×213313668⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10896 + ... + 23352.

It is an arithmetic number, because the mean of its divisors is an integer number (20755028).

Almost surely, 2^213313668 is an apocalyptic number.

It is an amenable number.

213313668 is an abundant number, since it is smaller than the sum of its proper divisors (284807004).

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

213313668 is a wasteful number, since it uses less digits than its factorization.

213313668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13891 (or 13889 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 213313668 is about 14605.2616546230. The cubic root of 213313668 is about 597.5022722438.

The spelling of 213313668 in words is "two hundred thirteen million, three hundred thirteen thousand, six hundred sixty-eight".