130990991 has 2 divisors, whose sum is σ = 130990992. Its totient is φ = 130990990.

The previous prime is 130990919. The next prime is 130991009. The reversal of 130990991 is 199099031.

Together with previous prime (130990919) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (199099031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130990991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130990901) 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, 65495495 + 65495496.

It is an arithmetic number, because the mean of its divisors is an integer number (65495496).

Almost surely, 2^130990991 is an apocalyptic number.

130990991 is a deficient number, since it is larger than the sum of its proper divisors (1).

130990991 is an equidigital number, since it uses as much as digits as its factorization.

130990991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19683, while the sum is 41.

The square root of 130990991 is about 11445.1295755007. The cubic root of 130990991 is about 507.8636651834.

The spelling of 130990991 in words is "one hundred thirty million, nine hundred ninety thousand, nine hundred ninety-one".