2131009975 has 24 divisors (see below), whose sum is σ = 2707514208. Its totient is φ = 1663334400.

The previous prime is 2131009957. The next prime is 2131009997. The reversal of 2131009975 is 5799001312.

It is not a de Polignac number, because 2131009975 - 2¹¹ = 2131007927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 165987 + ... + 178363.

It is an arithmetic number, because the mean of its divisors is an integer number (112813092).

Almost surely, 2^2131009975 is an apocalyptic number.

2131009975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2131009975 is a deficient number, since it is larger than the sum of its proper divisors (576504233).

2131009975 is a wasteful number, since it uses less digits than its factorization.

2131009975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555 (or 12550 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 2131009975 is about 46162.8635918527. The cubic root of 2131009975 is about 1286.8516810097.

The spelling of 2131009975 in words is "two billion, one hundred thirty-one million, nine thousand, nine hundred seventy-five".