23128043140 has 12 divisors (see below), whose sum is σ = 48568890636. Its totient is φ = 9251217248.

The previous prime is 23128043119. The next prime is 23128043153. The reversal of 23128043140 is 4134082132.

It can be written as a sum of positive squares in 2 ways, for example, as 5950271044 + 17177772096 = 77138^2 + 131064^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23128043099 and 23128043108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578201059 + ... + 578201098.

It is an arithmetic number, because the mean of its divisors is an integer number (4047407553).

Almost surely, 2^23128043140 is an apocalyptic number.

23128043140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23128043140 is an abundant number, since it is smaller than the sum of its proper divisors (25440847496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23128043140 is a wasteful number, since it uses less digits than its factorization.

23128043140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156402166 (or 1156402164 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 23128043140 in words is "twenty-three billion, one hundred twenty-eight million, forty-three thousand, one hundred forty".