213341665 has 8 divisors (see below), whose sum is σ = 257544000. Its totient is φ = 169650672.

The previous prime is 213341641. The next prime is 213341669. The reversal of 213341665 is 566143312.

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

It is a cyclic number.

It is not a de Polignac number, because 213341665 - 2¹¹ = 213339617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213341669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126915 + ... + 128584.

It is an arithmetic number, because the mean of its divisors is an integer number (32193000).

Almost surely, 2^213341665 is an apocalyptic number.

It is an amenable number.

213341665 is a deficient number, since it is larger than the sum of its proper divisors (44202335).

213341665 is a wasteful number, since it uses less digits than its factorization.

213341665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255671.

The product of its digits is 12960, while the sum is 31.

The square root of 213341665 is about 14606.2200791307. The cubic root of 213341665 is about 597.5284114336.

Adding to 213341665 its reverse (566143312), we get a palindrome (779484977).

The spelling of 213341665 in words is "two hundred thirteen million, three hundred forty-one thousand, six hundred sixty-five".