1288630315 has 32 divisors (see below), whose sum is σ = 1851079680. Its totient is φ = 842016384.

The previous prime is 1288630297. The next prime is 1288630319. The reversal of 1288630315 is 5130368821.

It is not a de Polignac number, because 1288630315 - 2¹⁵ = 1288597547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1288630319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220096 + ... + 225874.

It is an arithmetic number, because the mean of its divisors is an integer number (57846240).

Almost surely, 2^1288630315 is an apocalyptic number.

1288630315 is a deficient number, since it is larger than the sum of its proper divisors (562449365).

1288630315 is a wasteful number, since it uses less digits than its factorization.

1288630315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6091.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1288630315 is about 35897.4973361654. The cubic root of 1288630315 is about 1088.2018201133.

The spelling of 1288630315 in words is "one billion, two hundred eighty-eight million, six hundred thirty thousand, three hundred fifteen".