33810213 has 4 divisors (see below), whose sum is σ = 45080288. Its totient is φ = 22540140.

The previous prime is 33810209. The next prime is 33810233. The reversal of 33810213 is 31201833.

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 33810213 - 2² = 33810209 is a prime.

It is a super-2 number, since 2×33810213² = 2286261006210738, 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 33810213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33810233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5635033 + ... + 5635038.

It is an arithmetic number, because the mean of its divisors is an integer number (11270072).

Almost surely, 2^33810213 is an apocalyptic number.

It is an amenable number.

33810213 is a deficient number, since it is larger than the sum of its proper divisors (11270075).

33810213 is a wasteful number, since it uses less digits than its factorization.

33810213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11270074.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 33810213 is about 5814.6550198615. The cubic root of 33810213 is about 323.3572744757.

The spelling of 33810213 in words is "thirty-three million, eight hundred ten thousand, two hundred thirteen".