213311033 has 8 divisors (see below), whose sum is σ = 231184968. Its totient is φ = 195646464.

The previous prime is 213311029. The next prime is 213311041. The reversal of 213311033 is 330113312.

It can be written as a sum of positive squares in 4 ways, for example, as 3988009 + 209323024 = 1997^2 + 14468^2 .

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

It is not a de Polignac number, because 213311033 - 2² = 213311029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213311933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50216 + ... + 54297.

It is an arithmetic number, because the mean of its divisors is an integer number (28898121).

Almost surely, 2^213311033 is an apocalyptic number.

It is an amenable number.

213311033 is a deficient number, since it is larger than the sum of its proper divisors (17873935).

213311033 is a wasteful number, since it uses less digits than its factorization.

213311033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104683.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 213311033 is about 14605.1714471279. The cubic root of 213311033 is about 597.4998119780.

Adding to 213311033 its reverse (330113312), we get a palindrome (543424345).

The spelling of 213311033 in words is "two hundred thirteen million, three hundred eleven thousand, thirty-three".