128086311 has 8 divisors (see below), whose sum is σ = 173121520. Its totient is φ = 84220992.

The previous prime is 128086297. The next prime is 128086351. The reversal of 128086311 is 113680821.

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

It is not a de Polignac number, because 128086311 - 2⁶ = 128086247 is a prime.

It is a super-2 number, since 2×128086311² = 32812206131177442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128086351) 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, 292216 + ... + 292653.

It is an arithmetic number, because the mean of its divisors is an integer number (21640190).

Almost surely, 2^128086311 is an apocalyptic number.

128086311 is a deficient number, since it is larger than the sum of its proper divisors (45035209).

128086311 is an equidigital number, since it uses as much as digits as its factorization.

128086311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584945.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 128086311 is about 11317.5222995141. The cubic root of 128086311 is about 504.0816705959.

The spelling of 128086311 in words is "one hundred twenty-eight million, eighty-six thousand, three hundred eleven".