128911301 has 2 divisors, whose sum is σ = 128911302. Its totient is φ = 128911300.

The previous prime is 128911273. The next prime is 128911303. The reversal of 128911301 is 103119821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99480676 + 29430625 = 9974^2 + 5425^2 .

It is a cyclic number.

It is not a de Polignac number, because 128911301 - 2¹⁰ = 128910277 is a prime.

It is a Sophie Germain prime.

Together with 128911303, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128911303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64455650 + 64455651.

It is an arithmetic number, because the mean of its divisors is an integer number (64455651).

Almost surely, 2^128911301 is an apocalyptic number.

It is an amenable number.

128911301 is a deficient number, since it is larger than the sum of its proper divisors (1).

128911301 is an equidigital number, since it uses as much as digits as its factorization.

128911301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 128911301 is about 11353.9112644058. The cubic root of 128911301 is about 505.1616004078.

The spelling of 128911301 in words is "one hundred twenty-eight million, nine hundred eleven thousand, three hundred one".