1311232501312 has 28 divisors (see below), whose sum is σ = 2615458765516. Its totient is φ = 652219269120.

The previous prime is 1311232501303. The next prime is 1311232501333. The reversal of 1311232501312 is 2131052321131.

It can be written as a sum of positive squares in 2 ways, for example, as 742451062336 + 568781438976 = 861656^2 + 754176^2 .

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, 53065389 + ... + 53090092.

Almost surely, 2^{1311232501312} is an apocalyptic number.

It is an amenable number.

1311232501312 is a deficient number, since it is larger than the sum of its proper divisors (1304226264204).

1311232501312 is a wasteful number, since it uses less digits than its factorization.

1311232501312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106155686 (or 106155676 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 1311232501312 its reverse (2131052321131), we get a palindrome (3442284822443).

The spelling of 1311232501312 in words is "one trillion, three hundred eleven billion, two hundred thirty-two million, five hundred one thousand, three hundred twelve".