2131884928 has 16 divisors (see below), whose sum is σ = 4247114760. Its totient is φ = 1065942400.

The previous prime is 2131884883. The next prime is 2131884929. The reversal of 2131884928 is 8294881312.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (46) 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 (2131884929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8327548 + ... + 8327803.

Almost surely, 2^2131884928 is an apocalyptic number.

It is an amenable number.

2131884928 is a deficient number, since it is larger than the sum of its proper divisors (2115229832).

2131884928 is an equidigital number, since it uses as much as digits as its factorization.

2131884928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16655365 (or 16655353 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 2131884928 is about 46172.3394252446. The cubic root of 2131884928 is about 1287.0277760212.

The spelling of 2131884928 in words is "two billion, one hundred thirty-one million, eight hundred eighty-four thousand, nine hundred twenty-eight".