128031428143 has 4 divisors (see below), whose sum is σ = 135562688640. Its totient is φ = 120500167648.

The previous prime is 128031428137. The next prime is 128031428149. The reversal of 128031428143 is 341824130821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341824130821 = 17 ⋅20107301813.

It is an interprime number because it is at equal distance from previous prime (128031428137) and next prime (128031428149).

It is a cyclic number.

It is not a de Polignac number, because 128031428143 - 2⁹ = 128031427631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128031428149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765630223 + ... + 3765630256.

It is an arithmetic number, because the mean of its divisors is an integer number (33890672160).

Almost surely, 2^128031428143 is an apocalyptic number.

128031428143 is a deficient number, since it is larger than the sum of its proper divisors (7531260497).

128031428143 is an equidigital number, since it uses as much as digits as its factorization.

128031428143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7531260496.

The product of its (nonzero) digits is 36864, while the sum is 37.

Adding to 128031428143 its reverse (341824130821), we get a palindrome (469855558964).

The spelling of 128031428143 in words is "one hundred twenty-eight billion, thirty-one million, four hundred twenty-eight thousand, one hundred forty-three".