33313213 has 8 divisors (see below), whose sum is σ = 35183520. Its totient is φ = 31454640.

The previous prime is 33313211. The next prime is 33313219. The reversal of 33313213 is 31231333.

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

It is a cyclic number.

It is not a de Polignac number, because 33313213 - 2¹ = 33313211 is a prime.

It is a super-2 number, since 2×33313213² = 2219540320766738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33313211) 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, 3258 + ... + 8788.

It is an arithmetic number, because the mean of its divisors is an integer number (4397940).

Almost surely, 2^33313213 is an apocalyptic number.

It is an amenable number.

33313213 is a deficient number, since it is larger than the sum of its proper divisors (1870307).

33313213 is a wasteful number, since it uses less digits than its factorization.

33313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5867.

The product of its digits is 486, while the sum is 19.

The square root of 33313213 is about 5771.7599568936. The cubic root of 33313213 is about 321.7650286081.

Adding to 33313213 its reverse (31231333), we get a palindrome (64544546).

The spelling of 33313213 in words is "thirty-three million, three hundred thirteen thousand, two hundred thirteen".