213212344 has 16 divisors (see below), whose sum is σ = 400063320. Its totient is φ = 106528800.

The previous prime is 213212339. The next prime is 213212347. The reversal of 213212344 is 443212312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213212347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3019 + ... + 20869.

Almost surely, 2^213212344 is an apocalyptic number.

It is an amenable number.

213212344 is a deficient number, since it is larger than the sum of its proper divisors (186850976).

213212344 is a wasteful number, since it uses less digits than its factorization.

213212344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19350 (or 19346 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 213212344 is about 14601.7924927044. The cubic root of 213212344 is about 597.4076527272.

Adding to 213212344 its reverse (443212312), we get a palindrome (656424656).

The spelling of 213212344 in words is "two hundred thirteen million, two hundred twelve thousand, three hundred forty-four".