2131530168 has 64 divisors (see below), whose sum is σ = 5371236000. Its totient is φ = 704881152.

The previous prime is 2131530133. The next prime is 2131530169. The reversal of 2131530168 is 8610351312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131530169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2137446 + ... + 2138442.

Almost surely, 2^2131530168 is an apocalyptic number.

It is an amenable number.

2131530168 is an abundant number, since it is smaller than the sum of its proper divisors (3239705832).

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

2131530168 is a wasteful number, since it uses less digits than its factorization.

2131530168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2131530168 is about 46168.4975713960. The cubic root of 2131530168 is about 1286.9563820329.

The spelling of 2131530168 in words is "two billion, one hundred thirty-one million, five hundred thirty thousand, one hundred sixty-eight".