213305522 has 8 divisors (see below), whose sum is σ = 323257116. Its totient is φ = 105553152.

The previous prime is 213305501. The next prime is 213305537. The reversal of 213305522 is 225503312.

213305522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 198781801 + 14523721 = 14099^2 + 3811^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549563 + ... + 549950.

Almost surely, 2^213305522 is an apocalyptic number.

213305522 is a deficient number, since it is larger than the sum of its proper divisors (109951594).

213305522 is a wasteful number, since it uses less digits than its factorization.

213305522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099612.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 213305522 is about 14604.9827798598. The cubic root of 213305522 is about 597.4946663623.

Adding to 213305522 its reverse (225503312), we get a palindrome (438808834).

The spelling of 213305522 in words is "two hundred thirteen million, three hundred five thousand, five hundred twenty-two".