1311502321312 has 24 divisors (see below), whose sum is σ = 2642067179136. Its totient is φ = 640501132992.

The previous prime is 1311502321291. The next prime is 1311502321439. The reversal of 1311502321312 is 2131232051131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476561968 + ... + 476564719.

It is an arithmetic number, because the mean of its divisors is an integer number (110086132464).

Almost surely, 2^{1311502321312} is an apocalyptic number.

It is an amenable number.

1311502321312 is an abundant number, since it is smaller than the sum of its proper divisors (1330564857824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311502321312 is an equidigital number, since it uses as much as digits as its factorization.

1311502321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953126740 (or 953126732 counting only the distinct ones).

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

Adding to 1311502321312 its reverse (2131232051131), we get a palindrome (3442734372443).

The spelling of 1311502321312 in words is "one trillion, three hundred eleven billion, five hundred two million, three hundred twenty-one thousand, three hundred twelve".