213324657 has 16 divisors (see below), whose sum is σ = 350071680. Its totient is φ = 112522752.

The previous prime is 213324611. The next prime is 213324673. The reversal of 213324657 is 756423312.

It is not a de Polignac number, because 213324657 - 2¹⁵ = 213291889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213324157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390432 + ... + 390977.

It is an arithmetic number, because the mean of its divisors is an integer number (21879480).

Almost surely, 2^213324657 is an apocalyptic number.

It is an amenable number.

213324657 is a deficient number, since it is larger than the sum of its proper divisors (136747023).

213324657 is a wasteful number, since it uses less digits than its factorization.

213324657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781432.

The product of its digits is 30240, while the sum is 33.

The square root of 213324657 is about 14605.6378498168. The cubic root of 213324657 is about 597.5125323142.

Adding to 213324657 its reverse (756423312), we get a palindrome (969747969).

The spelling of 213324657 in words is "two hundred thirteen million, three hundred twenty-four thousand, six hundred fifty-seven".