1315887311 has 2 divisors, whose sum is σ = 1315887312. Its totient is φ = 1315887310.

The previous prime is 1315887289. The next prime is 1315887323. The reversal of 1315887311 is 1137885131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315887311 - 2²² = 1311693007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315887361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657943655 + 657943656.

It is an arithmetic number, because the mean of its divisors is an integer number (657943656).

Almost surely, 2^1315887311 is an apocalyptic number.

1315887311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315887311 is an equidigital number, since it uses as much as digits as its factorization.

1315887311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 38.

The square root of 1315887311 is about 36275.1610747630. The cubic root of 1315887311 is about 1095.8208674929.

The spelling of 1315887311 in words is "one billion, three hundred fifteen million, eight hundred eighty-seven thousand, three hundred eleven".