213533265 has 32 divisors (see below), whose sum is σ = 388924416. Its totient is φ = 99028160.

The previous prime is 213533263. The next prime is 213533279. The reversal of 213533265 is 562335312.

It is not a de Polignac number, because 213533265 - 2¹ = 213533263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213533263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24339 + ... + 31928.

It is an arithmetic number, because the mean of its divisors is an integer number (12153888).

Almost surely, 2^213533265 is an apocalyptic number.

It is an amenable number.

213533265 is a deficient number, since it is larger than the sum of its proper divisors (175391151).

213533265 is a wasteful number, since it uses less digits than its factorization.

213533265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56309.

The product of its digits is 16200, while the sum is 30.

The square root of 213533265 is about 14612.7774567329. Note that the first 3 decimals coincide. The cubic root of 213533265 is about 597.7072359929.

Adding to 213533265 its reverse (562335312), we get a palindrome (775868577).

The spelling of 213533265 in words is "two hundred thirteen million, five hundred thirty-three thousand, two hundred sixty-five".