33128713 has 2 divisors, whose sum is σ = 33128714. Its totient is φ = 33128712.

The previous prime is 33128687. The next prime is 33128731. The reversal of 33128713 is 31782133.

Together with next prime (33128731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27426169 + 5702544 = 5237^2 + 2388^2 .

It is a cyclic number.

It is not a de Polignac number, because 33128713 - 2⁵ = 33128681 is a prime.

It is not a weakly prime, because it can be changed into another prime (33128773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16564356 + 16564357.

It is an arithmetic number, because the mean of its divisors is an integer number (16564357).

Almost surely, 2^33128713 is an apocalyptic number.

It is an amenable number.

33128713 is a deficient number, since it is larger than the sum of its proper divisors (1).

33128713 is an equidigital number, since it uses as much as digits as its factorization.

33128713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 33128713 is about 5755.7547723995. The cubic root of 33128713 is about 321.1699135706.

The spelling of 33128713 in words is "thirty-three million, one hundred twenty-eight thousand, seven hundred thirteen".