1315001687 has 4 divisors (see below), whose sum is σ = 1315124400. Its totient is φ = 1314878976.

The previous prime is 1315001683. The next prime is 1315001713. The reversal of 1315001687 is 7861005131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1315001687 - 2² = 1315001683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315001683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43562 + ... + 67287.

It is an arithmetic number, because the mean of its divisors is an integer number (328781100).

Almost surely, 2^1315001687 is an apocalyptic number.

1315001687 is a deficient number, since it is larger than the sum of its proper divisors (122713).

1315001687 is a wasteful number, since it uses less digits than its factorization.

1315001687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122712.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1315001687 is about 36262.9519895995. The cubic root of 1315001687 is about 1095.5749743344.

The spelling of 1315001687 in words is "one billion, three hundred fifteen million, one thousand, six hundred eighty-seven".