311317310721 has 8 divisors (see below), whose sum is σ = 415098207040. Its totient is φ = 207540644112.

The previous prime is 311317310693. The next prime is 311317310747. The reversal of 311317310721 is 127013713113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311317310721 - 2¹³ = 311317302529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311317315721) 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 7 ways as a sum of consecutive naturals, for example, 881506 + ... + 1183083.

It is an arithmetic number, because the mean of its divisors is an integer number (51887275880).

Almost surely, 2^311317310721 is an apocalyptic number.

It is an amenable number.

311317310721 is a deficient number, since it is larger than the sum of its proper divisors (103780896319).

311317310721 is a wasteful number, since it uses less digits than its factorization.

311317310721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114855.

The product of its (nonzero) digits is 2646, while the sum is 30.

The spelling of 311317310721 in words is "three hundred eleven billion, three hundred seventeen million, three hundred ten thousand, seven hundred twenty-one".