33213323 has 16 divisors (see below), whose sum is σ = 40370400. Its totient is φ = 26906880.

The previous prime is 33213317. The next prime is 33213331. The reversal of 33213323 is 32331233.

It is not a de Polignac number, because 33213323 - 2¹² = 33209227 is a prime.

It is a super-3 number, since 3×33213323³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33213295 and 33213304.

It is not an unprimeable number, because it can be changed into a prime (33213373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143 + ... + 8151.

It is an arithmetic number, because the mean of its divisors is an integer number (2523150).

Almost surely, 2^33213323 is an apocalyptic number.

33213323 is a deficient number, since it is larger than the sum of its proper divisors (7157077).

33213323 is a wasteful number, since it uses less digits than its factorization.

33213323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8062.

The product of its digits is 972, while the sum is 20.

The square root of 33213323 is about 5763.1001205948. The cubic root of 33213323 is about 321.4431014149.

Adding to 33213323 its reverse (32331233), we get a palindrome (65544556).

The spelling of 33213323 in words is "thirty-three million, two hundred thirteen thousand, three hundred twenty-three".