213244326 has 20 divisors (see below), whose sum is σ = 477825612. Its totient is φ = 71081388.

The previous prime is 213244313. The next prime is 213244327. The reversal of 213244326 is 623442312.

213244326 is a `hidden beast` number, since 213 + 2 + 443 + 2 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 213244326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213244327) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 658000 + ... + 658323.

Almost surely, 2^213244326 is an apocalyptic number.

213244326 is an abundant number, since it is smaller than the sum of its proper divisors (264581286).

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

213244326 is a wasteful number, since it uses less digits than its factorization.

213244326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316337 (or 1316328 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 213244326 is about 14602.8875911581. The cubic root of 213244326 is about 597.4375217550.

Adding to 213244326 its reverse (623442312), we get a palindrome (836686638).

The spelling of 213244326 in words is "two hundred thirteen million, two hundred forty-four thousand, three hundred twenty-six".