1311401443012 has 24 divisors (see below), whose sum is σ = 2395223712000. Its totient is φ = 627063493056.

The previous prime is 1311401442979. The next prime is 1311401443019. The reversal of 1311401443012 is 2103441041131.

It is not an unprimeable number, because it can be changed into a prime (1311401443019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008012 + ... + 1907587.

It is an arithmetic number, because the mean of its divisors is an integer number (99800988000).

Almost surely, 2^{1311401443012} is an apocalyptic number.

It is an amenable number.

1311401443012 is a deficient number, since it is larger than the sum of its proper divisors (1083822268988).

1311401443012 is a wasteful number, since it uses less digits than its factorization.

1311401443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920515 (or 2920513 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1311401443012 its reverse (2103441041131), we get a palindrome (3414842484143).

The spelling of 1311401443012 in words is "one trillion, three hundred eleven billion, four hundred one million, four hundred forty-three thousand, twelve".