128233576431 has 12 divisors (see below), whose sum is σ = 185241360408. Its totient is φ = 85482089424.

The previous prime is 128233576403. The next prime is 128233576439. The reversal of 128233576431 is 134675332821.

128233576431 is a `hidden beast` number, since 1 + 2 + 8 + 2 + 33 + 576 + 43 + 1 = 666.

It is not a de Polignac number, because 128233576431 - 2⁹ = 128233575919 is a prime.

It is a super-2 number, since 2×128233576431² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128233576439) 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, 462205 + ... + 685638.

It is an arithmetic number, because the mean of its divisors is an integer number (15436780034).

Almost surely, 2^128233576431 is an apocalyptic number.

128233576431 is a deficient number, since it is larger than the sum of its proper divisors (57007783977).

128233576431 is a wasteful number, since it uses less digits than its factorization.

128233576431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160262 (or 1160259 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 128233576431 in words is "one hundred twenty-eight billion, two hundred thirty-three million, five hundred seventy-six thousand, four hundred thirty-one".