1312253512 has 16 divisors (see below), whose sum is σ = 2461430700. Its totient is φ = 655872000.

The previous prime is 1312253497. The next prime is 1312253531. The reversal of 1312253512 is 2153522131.

It can be written as a sum of positive squares in 2 ways, for example, as 1251319876 + 60933636 = 35374^2 + 7806^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8989 + ... + 52012.

Almost surely, 2^1312253512 is an apocalyptic number.

It is an amenable number.

1312253512 is a deficient number, since it is larger than the sum of its proper divisors (1149177188).

1312253512 is a wasteful number, since it uses less digits than its factorization.

1312253512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63696 (or 63692 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 1312253512 is about 36225.0398481492. The cubic root of 1312253512 is about 1094.8112410674.

Adding to 1312253512 its reverse (2153522131), we get a palindrome (3465775643).

The spelling of 1312253512 in words is "one billion, three hundred twelve million, two hundred fifty-three thousand, five hundred twelve".