128522532431 has 8 divisors (see below), whose sum is σ = 129786352800. Its totient is φ = 127259020512.

The previous prime is 128522532403. The next prime is 128522532443. The reversal of 128522532431 is 134235225821.

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 128522532431 - 2¹⁰ = 128522531407 is a prime.

It is a super-2 number, since 2×128522532431² (a number of 23 digits) 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 (128522532331) 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, 810245 + ... + 955793.

It is an arithmetic number, because the mean of its divisors is an integer number (16223294100).

Almost surely, 2^128522532431 is an apocalyptic number.

128522532431 is a deficient number, since it is larger than the sum of its proper divisors (1263820369).

128522532431 is a wasteful number, since it uses less digits than its factorization.

128522532431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154225.

The product of its digits is 115200, while the sum is 38.

The spelling of 128522532431 in words is "one hundred twenty-eight billion, five hundred twenty-two million, five hundred thirty-two thousand, four hundred thirty-one".