33012313 has 2 divisors, whose sum is σ = 33012314. Its totient is φ = 33012312.

The previous prime is 33012299. The next prime is 33012341. The reversal of 33012313 is 31321033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31775769 + 1236544 = 5637^2 + 1112^2 .

It is an emirp because it is prime and its reverse (31321033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33012313 - 2⁵ = 33012281 is a prime.

It is not a weakly prime, because it can be changed into another prime (33013313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16506156 + 16506157.

It is an arithmetic number, because the mean of its divisors is an integer number (16506157).

Almost surely, 2^33012313 is an apocalyptic number.

It is an amenable number.

33012313 is a deficient number, since it is larger than the sum of its proper divisors (1).

33012313 is an equidigital number, since it uses as much as digits as its factorization.

33012313 is an odious number, because the sum of its binary digits is odd.

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

The square root of 33012313 is about 5745.6342556762. The cubic root of 33012313 is about 320.7933213422.

Adding to 33012313 its reverse (31321033), we get a palindrome (64333346).

The spelling of 33012313 in words is "thirty-three million, twelve thousand, three hundred thirteen".