311320110121 has 4 divisors (see below), whose sum is σ = 311321702032. Its totient is φ = 311318518212.

The previous prime is 311320110113. The next prime is 311320110161. The reversal of 311320110121 is 121011023113.

It is a happy number.

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 311320110121 - 2³ = 311320110113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311320110095 and 311320110104.

It is not an unprimeable number, because it can be changed into a prime (311320110161) 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 3 ways as a sum of consecutive naturals, for example, 453495 + ... + 910108.

It is an arithmetic number, because the mean of its divisors is an integer number (77830425508).

Almost surely, 2^311320110121 is an apocalyptic number.

It is an amenable number.

311320110121 is a deficient number, since it is larger than the sum of its proper divisors (1591911).

311320110121 is a wasteful number, since it uses less digits than its factorization.

311320110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591910.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 311320110121 its reverse (121011023113), we get a palindrome (432331133234).

The spelling of 311320110121 in words is "three hundred eleven billion, three hundred twenty million, one hundred ten thousand, one hundred twenty-one".