1311012320501 has 24 divisors (see below), whose sum is σ = 1428482270880. Its totient is φ = 1196079616512.

The previous prime is 1311012320483. The next prime is 1311012320551. The reversal of 1311012320501 is 1050232101131.

It is not a de Polignac number, because 1311012320501 - 2¹⁸ = 1311012058357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311012320551) 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 23 ways as a sum of consecutive naturals, for example, 96256670 + ... + 96270288.

It is an arithmetic number, because the mean of its divisors is an integer number (59520094620).

Almost surely, 2^{1311012320501} is an apocalyptic number.

It is an amenable number.

1311012320501 is a deficient number, since it is larger than the sum of its proper divisors (117469950379).

1311012320501 is an equidigital number, since it uses as much as digits as its factorization.

1311012320501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14613 (or 14516 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 1311012320501 its reverse (1050232101131), we get a palindrome (2361244421632).

The spelling of 1311012320501 in words is "one trillion, three hundred eleven billion, twelve million, three hundred twenty thousand, five hundred one".