213642322 has 8 divisors (see below), whose sum is σ = 320573772. Its totient is φ = 106784400.

The previous prime is 213642283. The next prime is 213642323. The reversal of 213642322 is 223246312.

It can be written as a sum of positive squares in 2 ways, for example, as 143065521 + 70576801 = 11961^2 + 8401^2 .

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

It is not an unprimeable number, because it can be changed into a prime (213642323) 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, 10429 + ... + 23152.

Almost surely, 2^213642322 is an apocalyptic number.

213642322 is a deficient number, since it is larger than the sum of its proper divisors (106931450).

213642322 is a wasteful number, since it uses less digits than its factorization.

213642322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36764.

The product of its digits is 3456, while the sum is 25.

The square root of 213642322 is about 14616.5085434245. The cubic root of 213642322 is about 597.8089735591.

Adding to 213642322 its reverse (223246312), we get a palindrome (436888634).

The spelling of 213642322 in words is "two hundred thirteen million, six hundred forty-two thousand, three hundred twenty-two".