213321382 has 4 divisors (see below), whose sum is σ = 319982076. Its totient is φ = 106660690.

The previous prime is 213321349. The next prime is 213321413. The reversal of 213321382 is 283123312.

213321382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53330344 + ... + 53330347.

It is an arithmetic number, because the mean of its divisors is an integer number (79995519).

Almost surely, 2^213321382 is an apocalyptic number.

213321382 is a deficient number, since it is larger than the sum of its proper divisors (106660694).

213321382 is a wasteful number, since it uses less digits than its factorization.

213321382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106660693.

The product of its digits is 1728, while the sum is 25.

The square root of 213321382 is about 14605.5257351456. The cubic root of 213321382 is about 597.5094745905.

Adding to 213321382 its reverse (283123312), we get a palindrome (496444694).

The spelling of 213321382 in words is "two hundred thirteen million, three hundred twenty-one thousand, three hundred eighty-two".