128609303 has 2 divisors, whose sum is σ = 128609304. Its totient is φ = 128609302.

The previous prime is 128609291. The next prime is 128609311. The reversal of 128609303 is 303906821.

It is a strong prime.

It is an emirp because it is prime and its reverse (303906821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128609303 - 2¹⁸ = 128347159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128609303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128609903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64304651 + 64304652.

It is an arithmetic number, because the mean of its divisors is an integer number (64304652).

Almost surely, 2^128609303 is an apocalyptic number.

128609303 is a deficient number, since it is larger than the sum of its proper divisors (1).

128609303 is an equidigital number, since it uses as much as digits as its factorization.

128609303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 128609303 is about 11340.6041726180. The cubic root of 128609303 is about 504.7668145396.

The spelling of 128609303 in words is "one hundred twenty-eight million, six hundred nine thousand, three hundred three".