2131012987 has 2 divisors, whose sum is σ = 2131012988. Its totient is φ = 2131012986.

The previous prime is 2131012973. The next prime is 2131013011. The reversal of 2131012987 is 7892101312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131012987 - 2²⁷ = 1996795259 is a prime.

2131012987 is a modest number, since divided by 12987 gives 2131 as remainder.

It is not a weakly prime, because it can be changed into another prime (2131012907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065506493 + 1065506494.

It is an arithmetic number, because the mean of its divisors is an integer number (1065506494).

Almost surely, 2^2131012987 is an apocalyptic number.

2131012987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131012987 is an equidigital number, since it uses as much as digits as its factorization.

2131012987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 2131012987 is about 46162.8962154672. The cubic root of 2131012987 is about 1286.8522872943.

The spelling of 2131012987 in words is "two billion, one hundred thirty-one million, twelve thousand, nine hundred eighty-seven".