2131023187 has 2 divisors, whose sum is σ = 2131023188. Its totient is φ = 2131023186.

The previous prime is 2131023179. The next prime is 2131023217. The reversal of 2131023187 is 7813201312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131023187 - 2³ = 2131023179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131023157) 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, 1065511593 + 1065511594.

It is an arithmetic number, because the mean of its divisors is an integer number (1065511594).

Almost surely, 2^2131023187 is an apocalyptic number.

2131023187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131023187 is an equidigital number, since it uses as much as digits as its factorization.

2131023187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2131023187 is about 46163.0066936719. The cubic root of 2131023187 is about 1286.8543404450.

Adding to 2131023187 its reverse (7813201312), we get a palindrome (9944224499).

The spelling of 2131023187 in words is "two billion, one hundred thirty-one million, twenty-three thousand, one hundred eighty-seven".