33357213 has 12 divisors (see below), whose sum is σ = 51017148. Its totient is φ = 20929920.

The previous prime is 33357211. The next prime is 33357251. The reversal of 33357213 is 31275333.

It can be written as a sum of positive squares in 2 ways, for example, as 18818244 + 14538969 = 4338^2 + 3813^2 .

It is not a de Polignac number, because 33357213 - 2¹ = 33357211 is a prime.

It is a super-2 number, since 2×33357213² = 2225407318254738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33357211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108858 + ... + 109163.

It is an arithmetic number, because the mean of its divisors is an integer number (4251429).

Almost surely, 2^33357213 is an apocalyptic number.

It is an amenable number.

33357213 is a deficient number, since it is larger than the sum of its proper divisors (17659935).

33357213 is a wasteful number, since it uses less digits than its factorization.

33357213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218044 (or 218041 counting only the distinct ones).

The product of its digits is 5670, while the sum is 27.

The square root of 33357213 is about 5775.5703614448. The cubic root of 33357213 is about 321.9066284061.

The spelling of 33357213 in words is "thirty-three million, three hundred fifty-seven thousand, two hundred thirteen".