33113217 has 4 divisors (see below), whose sum is σ = 44150960. Its totient is φ = 22075476.

The previous prime is 33113207. The next prime is 33113221. The reversal of 33113217 is 71231133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-33113217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33113193 and 33113202.

It is not an unprimeable number, because it can be changed into a prime (33113207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5518867 + ... + 5518872.

It is an arithmetic number, because the mean of its divisors is an integer number (11037740).

Almost surely, 2^33113217 is an apocalyptic number.

It is an amenable number.

33113217 is a deficient number, since it is larger than the sum of its proper divisors (11037743).

33113217 is a wasteful number, since it uses less digits than its factorization.

33113217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11037742.

The product of its digits is 378, while the sum is 21.

The square root of 33113217 is about 5754.4084839365. The cubic root of 33113217 is about 321.1198298747.

The spelling of 33113217 in words is "thirty-three million, one hundred thirteen thousand, two hundred seventeen".