128543286231 has 28 divisors (see below), whose sum is σ = 194020397400. Its totient is φ = 85120314480.

The previous prime is 128543286217. The next prime is 128543286233. The reversal of 128543286231 is 132682345821.

128543286231 is a `hidden beast` number, since 1 + 2 + 8 + 543 + 2 + 86 + 23 + 1 = 666.

It is not a de Polignac number, because 128543286231 - 2³⁰ = 127469544407 is a prime.

It is a super-2 number, since 2×128543286231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128543286233) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 483085 + ... + 700326.

Almost surely, 2^128543286231 is an apocalyptic number.

128543286231 is a deficient number, since it is larger than the sum of its proper divisors (65477111169).

128543286231 is an equidigital number, since it uses as much as digits as its factorization.

128543286231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183578 (or 1183563 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 128543286231 in words is "one hundred twenty-eight billion, five hundred forty-three million, two hundred eighty-six thousand, two hundred thirty-one".