1315352191 has 2 divisors, whose sum is σ = 1315352192. Its totient is φ = 1315352190.

The previous prime is 1315352161. The next prime is 1315352219. The reversal of 1315352191 is 1912535131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315352191 - 2¹¹ = 1315350143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315352131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657676095 + 657676096.

It is an arithmetic number, because the mean of its divisors is an integer number (657676096).

Almost surely, 2^1315352191 is an apocalyptic number.

1315352191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315352191 is an equidigital number, since it uses as much as digits as its factorization.

1315352191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 31.

The square root of 1315352191 is about 36267.7844787905. The cubic root of 1315352191 is about 1095.6723048300.

The spelling of 1315352191 in words is "one billion, three hundred fifteen million, three hundred fifty-two thousand, one hundred ninety-one".