2131332128 has 24 divisors (see below), whose sum is σ = 4243212540. Its totient is φ = 1053690880.

The previous prime is 2131332121. The next prime is 2131332149. The reversal of 2131332128 is 8212331312.

It can be written as a sum of positive squares in 2 ways, for example, as 2117104144 + 14227984 = 46012^2 + 3772^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2131332097 and 2131332106.

It is not an unprimeable number, because it can be changed into a prime (2131332121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371333 + ... + 377028.

Almost surely, 2^2131332128 is an apocalyptic number.

It is an amenable number.

2131332128 is a deficient number, since it is larger than the sum of its proper divisors (2111880412).

2131332128 is an equidigital number, since it uses as much as digits as its factorization.

2131332128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748460 (or 748452 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 2131332128 is about 46166.3527690893. The cubic root of 2131332128 is about 1286.9165238535.

The spelling of 2131332128 in words is "two billion, one hundred thirty-one million, three hundred thirty-two thousand, one hundred twenty-eight".