213324533 has 4 divisors (see below), whose sum is σ = 224552160. Its totient is φ = 202096908.

The previous prime is 213324511. The next prime is 213324557. The reversal of 213324533 is 335423312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213324533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213324233) 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, 5613785 + ... + 5613822.

It is an arithmetic number, because the mean of its divisors is an integer number (56138040).

Almost surely, 2^213324533 is an apocalyptic number.

It is an amenable number.

213324533 is a deficient number, since it is larger than the sum of its proper divisors (11227627).

213324533 is a wasteful number, since it uses less digits than its factorization.

213324533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11227626.

The product of its digits is 6480, while the sum is 26.

The square root of 213324533 is about 14605.6336048800. The cubic root of 213324533 is about 597.5124165414.

Adding to 213324533 its reverse (335423312), we get a palindrome (548747845).

The spelling of 213324533 in words is "two hundred thirteen million, three hundred twenty-four thousand, five hundred thirty-three".