128913223 has 2 divisors, whose sum is σ = 128913224. Its totient is φ = 128913222.

The previous prime is 128913181. The next prime is 128913241. The reversal of 128913223 is 322319821.

It is a strong prime.

It is an emirp because it is prime and its reverse (322319821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128913223 - 2⁹ = 128912711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128914223) 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, 64456611 + 64456612.

It is an arithmetic number, because the mean of its divisors is an integer number (64456612).

Almost surely, 2^128913223 is an apocalyptic number.

128913223 is a deficient number, since it is larger than the sum of its proper divisors (1).

128913223 is an equidigital number, since it uses as much as digits as its factorization.

128913223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 128913223 is about 11353.9959045263. The cubic root of 128913223 is about 505.1641109603.

The spelling of 128913223 in words is "one hundred twenty-eight million, nine hundred thirteen thousand, two hundred twenty-three".