128248811 has 2 divisors, whose sum is σ = 128248812. Its totient is φ = 128248810.

The previous prime is 128248807. The next prime is 128248859. The reversal of 128248811 is 118842821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (118842821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128248811 - 2² = 128248807 is a prime.

It is not a weakly prime, because it can be changed into another prime (128248111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64124405 + 64124406.

It is an arithmetic number, because the mean of its divisors is an integer number (64124406).

Almost surely, 2^128248811 is an apocalyptic number.

128248811 is a deficient number, since it is larger than the sum of its proper divisors (1).

128248811 is an equidigital number, since it uses as much as digits as its factorization.

128248811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8192, while the sum is 35.

The square root of 128248811 is about 11324.6991571520. The cubic root of 128248811 is about 504.2947525789.

The spelling of 128248811 in words is "one hundred twenty-eight million, two hundred forty-eight thousand, eight hundred eleven".