128338411 has 4 divisors (see below), whose sum is σ = 128407824. Its totient is φ = 128269000.

The previous prime is 128338403. The next prime is 128338417. The reversal of 128338411 is 114833821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114833821 = 181 ⋅634441.

It is a cyclic number.

It is not a de Polignac number, because 128338411 - 2³ = 128338403 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128338417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31855 + ... + 35656.

It is an arithmetic number, because the mean of its divisors is an integer number (32101956).

Almost surely, 2^128338411 is an apocalyptic number.

128338411 is a deficient number, since it is larger than the sum of its proper divisors (69413).

128338411 is an equidigital number, since it uses as much as digits as its factorization.

128338411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69412.

The product of its digits is 4608, while the sum is 31.

The square root of 128338411 is about 11328.6544214218. The cubic root of 128338411 is about 504.4121657304.

The spelling of 128338411 in words is "one hundred twenty-eight million, three hundred thirty-eight thousand, four hundred eleven".