1315315501 has 2 divisors, whose sum is σ = 1315315502. Its totient is φ = 1315315500.

The previous prime is 1315315499. The next prime is 1315315511. The reversal of 1315315501 is 1055135131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1175461225 + 139854276 = 34285^2 + 11826^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315315501 - 2¹ = 1315315499 is a prime.

Together with 1315315499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315315511) 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, 657657750 + 657657751.

It is an arithmetic number, because the mean of its divisors is an integer number (657657751).

Almost surely, 2^1315315501 is an apocalyptic number.

It is an amenable number.

1315315501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315315501 is an equidigital number, since it uses as much as digits as its factorization.

1315315501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 1315315501 is about 36267.2786544566. The cubic root of 1315315501 is about 1095.6621172947.

The spelling of 1315315501 in words is "one billion, three hundred fifteen million, three hundred fifteen thousand, five hundred one".