311642317847 has 12 divisors (see below), whose sum is σ = 362533539096. Its totient is φ = 267113997360.

The previous prime is 311642317801. The next prime is 311642317871. The reversal of 311642317847 is 748713246113.

It is not a de Polignac number, because 311642317847 - 2¹² = 311642313751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311642317447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2047397 + ... + 2194337.

It is an arithmetic number, because the mean of its divisors is an integer number (30211128258).

Almost surely, 2^311642317847 is an apocalyptic number.

311642317847 is a deficient number, since it is larger than the sum of its proper divisors (50891221249).

311642317847 is a wasteful number, since it uses less digits than its factorization.

311642317847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190238 (or 190231 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The spelling of 311642317847 in words is "three hundred eleven billion, six hundred forty-two million, three hundred seventeen thousand, eight hundred forty-seven".