213322424 has 96 divisors (see below), whose sum is σ = 504336000. Its totient is φ = 82627776.

The previous prime is 213322397. The next prime is 213322457. The reversal of 213322424 is 424223312.

213322424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 213322424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562667 + ... + 563045.

It is an arithmetic number, because the mean of its divisors is an integer number (5253500).

Almost surely, 2^213322424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213322424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252168000).

213322424 is an abundant number, since it is smaller than the sum of its proper divisors (291013576).

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

213322424 is a wasteful number, since it uses less digits than its factorization.

213322424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 430 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 213322424 is about 14605.5614065328. The cubic root of 213322424 is about 597.5104474635.

Adding to 213322424 its reverse (424223312), we get a palindrome (637545736).

The spelling of 213322424 in words is "two hundred thirteen million, three hundred twenty-two thousand, four hundred twenty-four".