128069311 has 2 divisors, whose sum is σ = 128069312. Its totient is φ = 128069310.

The previous prime is 128069261. The next prime is 128069323. The reversal of 128069311 is 113960821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128069311 - 2¹⁵ = 128036543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128060311) 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, 64034655 + 64034656.

It is an arithmetic number, because the mean of its divisors is an integer number (64034656).

Almost surely, 2^128069311 is an apocalyptic number.

128069311 is a deficient number, since it is larger than the sum of its proper divisors (1).

128069311 is an equidigital number, since it uses as much as digits as its factorization.

128069311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 128069311 is about 11316.7712268120. The cubic root of 128069311 is about 504.0593685313.

The spelling of 128069311 in words is "one hundred twenty-eight million, sixty-nine thousand, three hundred eleven".