128389323 has 8 divisors (see below), whose sum is σ = 173992336. Its totient is φ = 84189600.

The previous prime is 128389319. The next prime is 128389343. The reversal of 128389323 is 323983821.

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

It is not a de Polignac number, because 128389323 - 2² = 128389319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128389343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350608 + ... + 350973.

It is an arithmetic number, because the mean of its divisors is an integer number (21749042).

Almost surely, 2^128389323 is an apocalyptic number.

128389323 is a deficient number, since it is larger than the sum of its proper divisors (45603013).

128389323 is an equidigital number, since it uses as much as digits as its factorization.

128389323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701645.

The product of its digits is 62208, while the sum is 39.

The square root of 128389323 is about 11330.9012439435. The cubic root of 128389323 is about 504.4788572140.

The spelling of 128389323 in words is "one hundred twenty-eight million, three hundred eighty-nine thousand, three hundred twenty-three".