1312501315 has 16 divisors (see below), whose sum is σ = 1627976160. Its totient is φ = 1015269120.

The previous prime is 1312501301. The next prime is 1312501321. The reversal of 1312501315 is 5131052131.

It is not a de Polignac number, because 1312501315 - 2⁵ = 1312501283 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18474 + ... + 54463.

It is an arithmetic number, because the mean of its divisors is an integer number (101748510).

Almost surely, 2^1312501315 is an apocalyptic number.

1312501315 is a deficient number, since it is larger than the sum of its proper divisors (315474845).

1312501315 is an equidigital number, since it uses as much as digits as its factorization.

1312501315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73062.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1312501315 is about 36228.4600141933. The cubic root of 1312501315 is about 1094.8801506269.

Adding to 1312501315 its reverse (5131052131), we get a palindrome (6443553446).

The spelling of 1312501315 in words is "one billion, three hundred twelve million, five hundred one thousand, three hundred fifteen".