1311920276373 has 12 divisors (see below), whose sum is σ = 2165709662688. Its totient is φ = 749668729320.

The previous prime is 1311920276369. The next prime is 1311920276417. The reversal of 1311920276373 is 3736720291131.

1311920276373 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 9 + 2 + 0 + 2 + 7 + 637 + 3 = 666.

It is not a de Polignac number, because 1311920276373 - 2² = 1311920276369 is a prime.

It is a super-2 number, since 2×1311920276373² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311920276323) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10412065623 + ... + 10412065748.

It is an arithmetic number, because the mean of its divisors is an integer number (180475805224).

Almost surely, 2^{1311920276373} is an apocalyptic number.

It is an amenable number.

1311920276373 is a deficient number, since it is larger than the sum of its proper divisors (853789386315).

1311920276373 is a wasteful number, since it uses less digits than its factorization.

1311920276373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20824131384 (or 20824131381 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The spelling of 1311920276373 in words is "one trillion, three hundred eleven billion, nine hundred twenty million, two hundred seventy-six thousand, three hundred seventy-three".