213423212 has 24 divisors (see below), whose sum is σ = 378937776. Its totient is φ = 105162048.

The previous prime is 213423167. The next prime is 213423229. The reversal of 213423212 is 212324312.

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, 242918 + ... + 243794.

It is an arithmetic number, because the mean of its divisors is an integer number (15789074).

Almost surely, 2^213423212 is an apocalyptic number.

It is an amenable number.

213423212 is a deficient number, since it is larger than the sum of its proper divisors (165514564).

213423212 is a wasteful number, since it uses less digits than its factorization.

213423212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1695 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 213423212 is about 14609.0113286286. The cubic root of 213423212 is about 597.6045341517.

Adding to 213423212 its reverse (212324312), we get a palindrome (425747524).

The spelling of 213423212 in words is "two hundred thirteen million, four hundred twenty-three thousand, two hundred twelve".