1312115005 has 16 divisors (see below), whose sum is σ = 1668567600. Its totient is φ = 988771840.

The previous prime is 1312114997. The next prime is 1312115039. The reversal of 1312115005 is 5005112131.

It can be written as a sum of positive squares in 8 ways, for example, as 504361764 + 807753241 = 22458^2 + 28421^2 .

It is not a de Polignac number, because 1312115005 - 2³ = 1312114997 is a prime.

It is a congruent number.

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, 104410 + ... + 116299.

It is an arithmetic number, because the mean of its divisors is an integer number (104285475).

Almost surely, 2^1312115005 is an apocalyptic number.

It is an amenable number.

1312115005 is a deficient number, since it is larger than the sum of its proper divisors (356452595).

1312115005 is a wasteful number, since it uses less digits than its factorization.

1312115005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220784.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1312115005 is about 36223.1280399692. The cubic root of 1312115005 is about 1094.7727209810.

Adding to 1312115005 its reverse (5005112131), we get a palindrome (6317227136).

The spelling of 1312115005 in words is "one billion, three hundred twelve million, one hundred fifteen thousand, five".