1301013191 has 2 divisors, whose sum is σ = 1301013192. Its totient is φ = 1301013190.

The previous prime is 1301013187. The next prime is 1301013211. The reversal of 1301013191 is 1913101031.

It is an a-pointer prime, because the next prime (1301013211) can be obtained adding 1301013191 to its sum of digits (20).

It is a weak prime.

It is an emirp because it is prime and its reverse (1913101031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301013191 - 2² = 1301013187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301013691) 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, 650506595 + 650506596.

It is an arithmetic number, because the mean of its divisors is an integer number (650506596).

Almost surely, 2^1301013191 is an apocalyptic number.

1301013191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301013191 is an equidigital number, since it uses as much as digits as its factorization.

1301013191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 1301013191 is about 36069.5604492209. The cubic root of 1301013191 is about 1091.6763451880.

The spelling of 1301013191 in words is "one billion, three hundred one million, thirteen thousand, one hundred ninety-one".