311933867768 has 8 divisors (see below), whose sum is σ = 584876002080. Its totient is φ = 155966933880.

The previous prime is 311933867767. The next prime is 311933867783. The reversal of 311933867768 is 867768339113.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 311933867768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311933867767) 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 as a sum of consecutive naturals, namely, 19495866728 + ... + 19495866743.

It is an arithmetic number, because the mean of its divisors is an integer number (73109500260).

Almost surely, 2^311933867768 is an apocalyptic number.

It is an amenable number.

311933867768 is a deficient number, since it is larger than the sum of its proper divisors (272942134312).

311933867768 is a wasteful number, since it uses less digits than its factorization.

311933867768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38991733477 (or 38991733473 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 62.

The spelling of 311933867768 in words is "three hundred eleven billion, nine hundred thirty-three million, eight hundred sixty-seven thousand, seven hundred sixty-eight".