213303565 has 16 divisors (see below), whose sum is σ = 258249600. Its totient is φ = 169128000.

The previous prime is 213303533. The next prime is 213303569. The reversal of 213303565 is 565303312.

It is not a de Polignac number, because 213303565 - 2⁵ = 213303533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213303569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437752 + ... + 438238.

It is an arithmetic number, because the mean of its divisors is an integer number (16140600).

Almost surely, 2^213303565 is an apocalyptic number.

It is an amenable number.

213303565 is a deficient number, since it is larger than the sum of its proper divisors (44946035).

213303565 is a wasteful number, since it uses less digits than its factorization.

213303565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 213303565 is about 14604.9157820235. The cubic root of 213303565 is about 597.4928390918.

Adding to 213303565 its reverse (565303312), we get a palindrome (778606877).

The spelling of 213303565 in words is "two hundred thirteen million, three hundred three thousand, five hundred sixty-five".