311321317117 has 4 divisors (see below), whose sum is σ = 317945174976. Its totient is φ = 304697459260.

The previous prime is 311321317091. The next prime is 311321317159. The reversal of 311321317117 is 711713123113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311321317117 - 2²⁷ = 311187099389 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 (311321318117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3311928859 + ... + 3311928952.

It is an arithmetic number, because the mean of its divisors is an integer number (79486293744).

Almost surely, 2^311321317117 is an apocalyptic number.

It is an amenable number.

311321317117 is a deficient number, since it is larger than the sum of its proper divisors (6623857859).

311321317117 is an equidigital number, since it uses as much as digits as its factorization.

311321317117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623857858.

The product of its digits is 2646, while the sum is 31.

The spelling of 311321317117 in words is "three hundred eleven billion, three hundred twenty-one million, three hundred seventeen thousand, one hundred seventeen".