1311360440634 has 12 divisors (see below), whose sum is σ = 2841280954746. Its totient is φ = 437120146872.

The previous prime is 1311360440629. The next prime is 1311360440681. The reversal of 1311360440634 is 4360440631131.

1311360440634 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 3 + 604 + 40 + 6 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 669783470409 + 641576970225 = 818403^2 + 800985^2 .

It is a Curzon 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 in 5 ways as a sum of consecutive naturals, for example, 36426678889 + ... + 36426678924.

Almost surely, 2^{1311360440634} is an apocalyptic number.

1311360440634 is an abundant number, since it is smaller than the sum of its proper divisors (1529920514112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311360440634 is a wasteful number, since it uses less digits than its factorization.

1311360440634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72853357821 (or 72853357818 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 1311360440634 in words is "one trillion, three hundred eleven billion, three hundred sixty million, four hundred forty thousand, six hundred thirty-four".