1315331371 has 2 divisors, whose sum is σ = 1315331372. Its totient is φ = 1315331370.

The previous prime is 1315331363. The next prime is 1315331377. The reversal of 1315331371 is 1731335131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315331371 - 2³ = 1315331363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315331377) 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, 657665685 + 657665686.

It is an arithmetic number, because the mean of its divisors is an integer number (657665686).

Almost surely, 2^1315331371 is an apocalyptic number.

1315331371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315331371 is an equidigital number, since it uses as much as digits as its factorization.

1315331371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835, while the sum is 28.

The square root of 1315331371 is about 36267.4974460604. The cubic root of 1315331371 is about 1095.6665238643. Note that the first 3 decimals are identical.

The spelling of 1315331371 in words is "one billion, three hundred fifteen million, three hundred thirty-one thousand, three hundred seventy-one".