128323597 has 2 divisors, whose sum is σ = 128323598. Its totient is φ = 128323596.

The previous prime is 128323553. The next prime is 128323603. The reversal of 128323597 is 795323821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122301481 + 6022116 = 11059^2 + 2454^2 .

It is a cyclic number.

It is not a de Polignac number, because 128323597 - 2⁷ = 128323469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128323697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64161798 + 64161799.

It is an arithmetic number, because the mean of its divisors is an integer number (64161799).

Almost surely, 2^128323597 is an apocalyptic number.

It is an amenable number.

128323597 is a deficient number, since it is larger than the sum of its proper divisors (1).

128323597 is an equidigital number, since it uses as much as digits as its factorization.

128323597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 128323597 is about 11328.0005737994. Note that the first 3 decimals coincide. The cubic root of 128323597 is about 504.3927570195.

The spelling of 128323597 in words is "one hundred twenty-eight million, three hundred twenty-three thousand, five hundred ninety-seven".