1311265365332 has 12 divisors (see below), whose sum is σ = 2471230880916. Its totient is φ = 605199399360.

The previous prime is 1311265365331. The next prime is 1311265365437. The reversal of 1311265365332 is 2335635621131.

It can be written as a sum of positive squares in 2 ways, for example, as 441977654596 + 869287710736 = 664814^2 + 932356^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1311265365332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311265365331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12608320769 + ... + 12608320872.

It is an arithmetic number, because the mean of its divisors is an integer number (205935906743).

Almost surely, 2^{1311265365332} is an apocalyptic number.

It is an amenable number.

1311265365332 is a deficient number, since it is larger than the sum of its proper divisors (1159965515584).

1311265365332 is a wasteful number, since it uses less digits than its factorization.

1311265365332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25216641658 (or 25216641656 counting only the distinct ones).

The product of its digits is 291600, while the sum is 41.

The spelling of 1311265365332 in words is "one trillion, three hundred eleven billion, two hundred sixty-five million, three hundred sixty-five thousand, three hundred thirty-two".