1316815315 has 16 divisors (see below), whose sum is σ = 1591368768. Its totient is φ = 1046020096.

The previous prime is 1316815307. The next prime is 1316815319. The reversal of 1316815315 is 5135186131.

It is a cyclic number.

It is not a de Polignac number, because 1316815315 - 2³ = 1316815307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1316815319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452154 + ... + 455056.

It is an arithmetic number, because the mean of its divisors is an integer number (99460548).

Almost surely, 2^1316815315 is an apocalyptic number.

1316815315 is a deficient number, since it is larger than the sum of its proper divisors (274553453).

1316815315 is a wasteful number, since it uses less digits than its factorization.

1316815315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518.

The product of its digits is 10800, while the sum is 34.

The square root of 1316815315 is about 36287.9499972098. The cubic root of 1316815315 is about 1096.0784090968.

The spelling of 1316815315 in words is "one billion, three hundred sixteen million, eight hundred fifteen thousand, three hundred fifteen".