1311275428468 has 6 divisors (see below), whose sum is σ = 2294731999826. Its totient is φ = 655637714232.

The previous prime is 1311275428459. The next prime is 1311275428493. The reversal of 1311275428468 is 8648245721131.

It can be written as a sum of positive squares in only one way, i.e., 1001736753424 + 309538675044 = 1000868^2 + 556362^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163909428555 + ... + 163909428562.

Almost surely, 2^{1311275428468} is an apocalyptic number.

It is an amenable number.

1311275428468 is a deficient number, since it is larger than the sum of its proper divisors (983456571358).

1311275428468 is a wasteful number, since it uses less digits than its factorization.

1311275428468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327818857121 (or 327818857119 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The spelling of 1311275428468 in words is "one trillion, three hundred eleven billion, two hundred seventy-five million, four hundred twenty-eight thousand, four hundred sixty-eight".