128131304441 has 16 divisors (see below), whose sum is σ = 147914707200. Its totient is φ = 108718460928.

The previous prime is 128131304387. The next prime is 128131304453. The reversal of 128131304441 is 144403131821.

It is not a de Polignac number, because 128131304441 - 2⁶ = 128131304377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128131304398 and 128131304407.

It is not an unprimeable number, because it can be changed into a prime (128131304341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1905725 + ... + 1971813.

It is an arithmetic number, because the mean of its divisors is an integer number (9244669200).

Almost surely, 2^128131304441 is an apocalyptic number.

It is an amenable number.

128131304441 is a deficient number, since it is larger than the sum of its proper divisors (19783402759).

128131304441 is a wasteful number, since it uses less digits than its factorization.

128131304441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68888.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 128131304441 in words is "one hundred twenty-eight billion, one hundred thirty-one million, three hundred four thousand, four hundred forty-one".