128312841 has 8 divisors (see below), whose sum is σ = 174312000. Its totient is φ = 83927792.

The previous prime is 128312831. The next prime is 128312843. The reversal of 128312841 is 148213821.

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

It is a cyclic number.

It is not a de Polignac number, because 128312841 - 2⁶ = 128312777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128312799 and 128312808.

It is not an unprimeable number, because it can be changed into a prime (128312843) 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, 403341 + ... + 403658.

It is an arithmetic number, because the mean of its divisors is an integer number (21789000).

Almost surely, 2^128312841 is an apocalyptic number.

It is an amenable number.

128312841 is a deficient number, since it is larger than the sum of its proper divisors (45999159).

128312841 is an equidigital number, since it uses as much as digits as its factorization.

128312841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807055.

The product of its digits is 3072, while the sum is 30.

The square root of 128312841 is about 11327.5258110498. The cubic root of 128312841 is about 504.3786640020.

The spelling of 128312841 in words is "one hundred twenty-eight million, three hundred twelve thousand, eight hundred forty-one".