33385213 has 4 divisors (see below), whose sum is σ = 34836768. Its totient is φ = 31933660.

The previous prime is 33385207. The next prime is 33385237. The reversal of 33385213 is 31258333.

It is a happy number.

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 not a de Polignac number, because 33385213 - 2¹⁷ = 33254141 is a prime.

It is a super-2 number, since 2×33385213² = 2229144894110738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33385273) 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 3 ways as a sum of consecutive naturals, for example, 725743 + ... + 725788.

It is an arithmetic number, because the mean of its divisors is an integer number (8709192).

Almost surely, 2^33385213 is an apocalyptic number.

It is an amenable number.

33385213 is a deficient number, since it is larger than the sum of its proper divisors (1451555).

33385213 is a wasteful number, since it uses less digits than its factorization.

33385213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451554.

The product of its digits is 6480, while the sum is 28.

The square root of 33385213 is about 5777.9938560023. The cubic root of 33385213 is about 321.9966725477.

The spelling of 33385213 in words is "thirty-three million, three hundred eighty-five thousand, two hundred thirteen".