33213130 has 16 divisors (see below), whose sum is σ = 59860584. Its totient is φ = 13268160.

The previous prime is 33213119. The next prime is 33213137. The reversal of 33213130 is 3131233.

It can be written as a sum of positive squares in 4 ways, for example, as 33074001 + 139129 = 5751^2 + 373^2 .

It is a super-2 number, since 2×33213130² = 2206224008793800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33213137) 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, 8584 + ... + 11836.

Almost surely, 2^33213130 is an apocalyptic number.

33213130 is a deficient number, since it is larger than the sum of its proper divisors (26647454).

33213130 is a wasteful number, since it uses less digits than its factorization.

33213130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 33213130 is about 5763.0833761104. The cubic root of 33213130 is about 321.4424787869.

Adding to 33213130 its reverse (3131233), we get a palindrome (36344363).

The spelling of 33213130 in words is "thirty-three million, two hundred thirteen thousand, one hundred thirty".