1315101191 has 2 divisors, whose sum is σ = 1315101192. Its totient is φ = 1315101190.

The previous prime is 1315101187. The next prime is 1315101217. The reversal of 1315101191 is 1911015131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315101191 - 2² = 1315101187 is a prime.

It is a super-2 number, since 2×1315101191² = 3458982285139236962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315101391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657550595 + 657550596.

It is an arithmetic number, because the mean of its divisors is an integer number (657550596).

Almost surely, 2^1315101191 is an apocalyptic number.

1315101191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315101191 is an equidigital number, since it uses as much as digits as its factorization.

1315101191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 23.

The square root of 1315101191 is about 36264.3239424093. The cubic root of 1315101191 is about 1095.6026070854.

The spelling of 1315101191 in words is "one billion, three hundred fifteen million, one hundred one thousand, one hundred ninety-one".