1311988871134 has 4 divisors (see below), whose sum is σ = 1967983306704. Its totient is φ = 655994435566.

The previous prime is 1311988871129. The next prime is 1311988871161. The reversal of 1311988871134 is 4311788891131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327997217782 + ... + 327997217785.

It is an arithmetic number, because the mean of its divisors is an integer number (491995826676).

Almost surely, 2^{1311988871134} is an apocalyptic number.

1311988871134 is a deficient number, since it is larger than the sum of its proper divisors (655994435570).

1311988871134 is an equidigital number, since it uses as much as digits as its factorization.

1311988871134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655994435569.

The product of its digits is 1161216, while the sum is 55.

The spelling of 1311988871134 in words is "one trillion, three hundred eleven billion, nine hundred eighty-eight million, eight hundred seventy-one thousand, one hundred thirty-four".