33213313 has 8 divisors (see below), whose sum is σ = 38001600. Its totient is φ = 28435920.

The previous prime is 33213289. The next prime is 33213317. The reversal of 33213313 is 31331233.

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

It is a cyclic number.

It is not a de Polignac number, because 33213313 - 2¹⁷ = 33082241 is a prime.

It is a super-2 number, since 2×33213313² = 2206248320871938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33213317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5463 + ... + 9811.

It is an arithmetic number, because the mean of its divisors is an integer number (4750200).

Almost surely, 2^33213313 is an apocalyptic number.

It is an amenable number.

33213313 is a deficient number, since it is larger than the sum of its proper divisors (4788287).

33213313 is a wasteful number, since it uses less digits than its factorization.

33213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447.

The product of its digits is 486, while the sum is 19.

The square root of 33213313 is about 5763.0992530061. The cubic root of 33213313 is about 321.4430691544.

Adding to 33213313 its reverse (31331233), we get a palindrome (64544546).

The spelling of 33213313 in words is "thirty-three million, two hundred thirteen thousand, three hundred thirteen".