33630313 has 2 divisors, whose sum is σ = 33630314. Its totient is φ = 33630312.

The previous prime is 33630307. The next prime is 33630329. The reversal of 33630313 is 31303633.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17081689 + 16548624 = 4133^2 + 4068^2 .

It is a cyclic number.

It is not a de Polignac number, because 33630313 - 2⁵ = 33630281 is a prime.

It is a super-2 number, since 2×33630313² = 2261995904955938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33630353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16815156 + 16815157.

It is an arithmetic number, because the mean of its divisors is an integer number (16815157).

Almost surely, 2^33630313 is an apocalyptic number.

It is an amenable number.

33630313 is a deficient number, since it is larger than the sum of its proper divisors (1).

33630313 is an equidigital number, since it uses as much as digits as its factorization.

33630313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 22.

The square root of 33630313 is about 5799.1648536664. The cubic root of 33630313 is about 322.7827394472.

Adding to 33630313 its reverse (31303633), we get a palindrome (64933946).

The spelling of 33630313 in words is "thirty-three million, six hundred thirty thousand, three hundred thirteen".