130191001 has 2 divisors, whose sum is σ = 130191002. Its totient is φ = 130191000.

The previous prime is 130190999. The next prime is 130191007. The reversal of 130191001 is 100191031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82373776 + 47817225 = 9076^2 + 6915^2 .

It is a cyclic number.

It is not a de Polignac number, because 130191001 - 2¹ = 130190999 is a prime.

Together with 130190999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (130191007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65095500 + 65095501.

It is an arithmetic number, because the mean of its divisors is an integer number (65095501).

Almost surely, 2^130191001 is an apocalyptic number.

It is an amenable number.

130191001 is a deficient number, since it is larger than the sum of its proper divisors (1).

130191001 is an equidigital number, since it uses as much as digits as its factorization.

130191001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 16.

The square root of 130191001 is about 11410.1271246205. The cubic root of 130191001 is about 506.8276759660.

The spelling of 130191001 in words is "one hundred thirty million, one hundred ninety-one thousand, one".