1315327331 has 2 divisors, whose sum is σ = 1315327332. Its totient is φ = 1315327330.

The previous prime is 1315327313. The next prime is 1315327339. The reversal of 1315327331 is 1337235131.

Together with previous prime (1315327313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315327331 - 2¹⁸ = 1315065187 is a prime.

It is a super-2 number, since 2×1315327331² = 3460171975351167122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1315327294 and 1315327303.

It is not a weakly prime, because it can be changed into another prime (1315327339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657663665 + 657663666.

It is an arithmetic number, because the mean of its divisors is an integer number (657663666).

Almost surely, 2^1315327331 is an apocalyptic number.

1315327331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315327331 is an equidigital number, since it uses as much as digits as its factorization.

1315327331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 29.

The square root of 1315327331 is about 36267.4417487641. The cubic root of 1315327331 is about 1095.6654020945.

The spelling of 1315327331 in words is "one billion, three hundred fifteen million, three hundred twenty-seven thousand, three hundred thirty-one".