1315611715 has 8 divisors (see below), whose sum is σ = 1722255408. Its totient is φ = 956808480.

The previous prime is 1315611683. The next prime is 1315611719. The reversal of 1315611715 is 5171165131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1315611715 - 2⁵ = 1315611683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315611719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11960052 + ... + 11960161.

It is an arithmetic number, because the mean of its divisors is an integer number (215281926).

Almost surely, 2^1315611715 is an apocalyptic number.

1315611715 is a deficient number, since it is larger than the sum of its proper divisors (406643693).

1315611715 is a wasteful number, since it uses less digits than its factorization.

1315611715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23920229.

The product of its digits is 3150, while the sum is 31.

The square root of 1315611715 is about 36271.3621883711. The cubic root of 1315611715 is about 1095.7443601984.

Adding to 1315611715 its reverse (5171165131), we get a palindrome (6486776846).

The spelling of 1315611715 in words is "one billion, three hundred fifteen million, six hundred eleven thousand, seven hundred fifteen".