2312831128 has 8 divisors (see below), whose sum is σ = 4336558380. Its totient is φ = 1156415560.

The previous prime is 2312831117. The next prime is 2312831137. The reversal of 2312831128 is 8211382132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2312831128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144551938 + ... + 144551953.

Almost surely, 2^2312831128 is an apocalyptic number.

It is an amenable number.

2312831128 is a deficient number, since it is larger than the sum of its proper divisors (2023727252).

2312831128 is a wasteful number, since it uses less digits than its factorization.

2312831128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289103897 (or 289103893 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 2312831128 is about 48091.9029359413. The cubic root of 2312831128 is about 1322.4562331991.

The spelling of 2312831128 in words is "two billion, three hundred twelve million, eight hundred thirty-one thousand, one hundred twenty-eight".