213303211 has 4 divisors (see below), whose sum is σ = 232694424. Its totient is φ = 193912000.

The previous prime is 213303179. The next prime is 213303221. The reversal of 213303211 is 112303312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213303211 - 2⁵ = 213303179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213303221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9695590 + ... + 9695611.

It is an arithmetic number, because the mean of its divisors is an integer number (58173606).

Almost surely, 2^213303211 is an apocalyptic number.

213303211 is a deficient number, since it is larger than the sum of its proper divisors (19391213).

213303211 is a wasteful number, since it uses less digits than its factorization.

213303211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19391212.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213303211 is about 14604.9036628113. The cubic root of 213303211 is about 597.4925085573.

Adding to 213303211 its reverse (112303312), we get a palindrome (325606523).

The spelling of 213303211 in words is "two hundred thirteen million, three hundred three thousand, two hundred eleven".