213642326 has 8 divisors (see below), whose sum is σ = 320525760. Its totient is φ = 106800408.

The previous prime is 213642323. The next prime is 213642343. The reversal of 213642326 is 623246312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213642323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13220 + ... + 24536.

It is an arithmetic number, because the mean of its divisors is an integer number (40065720).

Almost surely, 2^213642326 is an apocalyptic number.

213642326 is a deficient number, since it is larger than the sum of its proper divisors (106883434).

213642326 is a wasteful number, since it uses less digits than its factorization.

213642326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20758.

The product of its digits is 10368, while the sum is 29.

The square root of 213642326 is about 14616.5086802560. The cubic root of 213642326 is about 597.8089772900.

Adding to 213642326 its reverse (623246312), we get a palindrome (836888638).

The spelling of 213642326 in words is "two hundred thirteen million, six hundred forty-two thousand, three hundred twenty-six".