33513213 has 8 divisors (see below), whose sum is σ = 45118528. Its totient is φ = 22125024.

The previous prime is 33513203. The next prime is 33513247. The reversal of 33513213 is 31231533.

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

It is not a de Polignac number, because 33513213 - 2⁴ = 33513197 is a prime.

It is a super-2 number, since 2×33513213² = 2246270891166738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33513213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33513203) 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, 53920 + ... + 54537.

It is an arithmetic number, because the mean of its divisors is an integer number (5639816).

Almost surely, 2^33513213 is an apocalyptic number.

It is an amenable number.

33513213 is a deficient number, since it is larger than the sum of its proper divisors (11605315).

33513213 is a wasteful number, since it uses less digits than its factorization.

33513213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108563.

The product of its digits is 810, while the sum is 21.

The square root of 33513213 is about 5789.0597682180. The cubic root of 33513213 is about 322.4076630067.

Adding to 33513213 its reverse (31231533), we get a palindrome (64744746).

The spelling of 33513213 in words is "thirty-three million, five hundred thirteen thousand, two hundred thirteen".