128306413 has 2 divisors, whose sum is σ = 128306414. Its totient is φ = 128306412.

The previous prime is 128306401. The next prime is 128306419. The reversal of 128306413 is 314603821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117983044 + 10323369 = 10862^2 + 3213^2 .

It is a cyclic number.

It is not a de Polignac number, because 128306413 - 2⁹ = 128305901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128306419) 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, 64153206 + 64153207.

It is an arithmetic number, because the mean of its divisors is an integer number (64153207).

Almost surely, 2^128306413 is an apocalyptic number.

It is an amenable number.

128306413 is a deficient number, since it is larger than the sum of its proper divisors (1).

128306413 is an equidigital number, since it uses as much as digits as its factorization.

128306413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 128306413 is about 11327.2420738678. The cubic root of 128306413 is about 504.3702413579.

The spelling of 128306413 in words is "one hundred twenty-eight million, three hundred six thousand, four hundred thirteen".