128318583 has 8 divisors (see below), whose sum is σ = 171952000. Its totient is φ = 85115448.

The previous prime is 128318551. The next prime is 128318599. The reversal of 128318583 is 385813821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128318583 - 2⁵ = 128318551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128311583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106873 + ... + 108066.

It is an arithmetic number, because the mean of its divisors is an integer number (21494000).

Almost surely, 2^128318583 is an apocalyptic number.

128318583 is a deficient number, since it is larger than the sum of its proper divisors (43633417).

128318583 is a wasteful number, since it uses less digits than its factorization.

128318583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215141.

The product of its digits is 46080, while the sum is 39.

The square root of 128318583 is about 11327.7792616205. The cubic root of 128318583 is about 504.3861875387.

The spelling of 128318583 in words is "one hundred twenty-eight million, three hundred eighteen thousand, five hundred eighty-three".