1311242365564 has 24 divisors (see below), whose sum is σ = 2310793204608. Its totient is φ = 651023826480.

The previous prime is 1311242365453. The next prime is 1311242365571. The reversal of 1311242365564 is 4655632421131.

It is a super-2 number, since 2×1311242365564² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1311242365564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362154 + ... + 1659409.

It is an arithmetic number, because the mean of its divisors is an integer number (96283050192).

Almost surely, 2^{1311242365564} is an apocalyptic number.

It is an amenable number.

1311242365564 is a deficient number, since it is larger than the sum of its proper divisors (999550839044).

1311242365564 is a wasteful number, since it uses less digits than its factorization.

1311242365564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022705 (or 2022703 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

Adding to 1311242365564 its reverse (4655632421131), we get a palindrome (5966874786695).

The spelling of 1311242365564 in words is "one trillion, three hundred eleven billion, two hundred forty-two million, three hundred sixty-five thousand, five hundred sixty-four".