213423112 has 16 divisors (see below), whose sum is σ = 457335360. Its totient is φ = 91467024.

The previous prime is 213423109. The next prime is 213423139. The reversal of 213423112 is 211324312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213423112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1905508 + ... + 1905619.

It is an arithmetic number, because the mean of its divisors is an integer number (28583460).

Almost surely, 2^213423112 is an apocalyptic number.

It is an amenable number.

213423112 is an abundant number, since it is smaller than the sum of its proper divisors (243912248).

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

213423112 is a wasteful number, since it uses less digits than its factorization.

213423112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811140 (or 3811136 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 213423112 is about 14609.0079060832. The cubic root of 213423112 is about 597.6044408153.

Adding to 213423112 its reverse (211324312), we get a palindrome (424747424).

The spelling of 213423112 in words is "two hundred thirteen million, four hundred twenty-three thousand, one hundred twelve".