128851331 has 12 divisors (see below), whose sum is σ = 157778280. Its totient is φ = 104630400.

The previous prime is 128851309. The next prime is 128851361. The reversal of 128851331 is 133158821.

It is not a de Polignac number, because 128851331 - 2¹⁰ = 128850307 is a prime.

It is a super-2 number, since 2×128851331² = 33205331000943122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128851361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68270 + ... + 70131.

It is an arithmetic number, because the mean of its divisors is an integer number (13148190).

Almost surely, 2^128851331 is an apocalyptic number.

128851331 is a deficient number, since it is larger than the sum of its proper divisors (28926949).

128851331 is a wasteful number, since it uses less digits than its factorization.

128851331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138434 (or 138427 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 128851331 is about 11351.2700170510. The cubic root of 128851331 is about 505.0832539276.

The spelling of 128851331 in words is "one hundred twenty-eight million, eight hundred fifty-one thousand, three hundred thirty-one".