213533430 has 96 divisors (see below), whose sum is σ = 594155520. Its totient is φ = 48698880.

The previous prime is 213533417. The next prime is 213533443. The reversal of 213533430 is 34335312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213533417) and next prime (213533443).

It is a self number, because there is not a number n which added to its sum of digits gives 213533430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94251 + ... + 96489.

It is an arithmetic number, because the mean of its divisors is an integer number (6189120).

Almost surely, 2^213533430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213533430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297077760).

213533430 is an abundant number, since it is smaller than the sum of its proper divisors (380622090).

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

213533430 is a wasteful number, since it uses less digits than its factorization.

213533430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 213533430 is about 14612.7831024757. The cubic root of 213533430 is about 597.7073899449.

Adding to 213533430 its reverse (34335312), we get a palindrome (247868742).

The spelling of 213533430 in words is "two hundred thirteen million, five hundred thirty-three thousand, four hundred thirty".