311313121110331 has 4 divisors (see below), whose sum is σ = 311320969313992. Its totient is φ = 311305272906672.

The previous prime is 311313121110301. The next prime is 311313121110337. The reversal of 311313121110331 is 133011121313113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311313121110331 - 2³¹ = 311310973626683 is a prime.

It is a super-2 number, since 2×311313121110331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311313121110296 and 311313121110305.

It is not an unprimeable number, because it can be changed into a prime (311313121110337) 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, 3924042330 + ... + 3924121663.

It is an arithmetic number, because the mean of its divisors is an integer number (77830242328498).

Almost surely, 2^{311313121110331} is an apocalyptic number.

311313121110331 is a deficient number, since it is larger than the sum of its proper divisors (7848203661).

311313121110331 is an equidigital number, since it uses as much as digits as its factorization.

311313121110331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848203660.

The product of its (nonzero) digits is 486, while the sum is 25.

Adding to 311313121110331 its reverse (133011121313113), we get a palindrome (444324242423444).

The spelling of 311313121110331 in words is "three hundred eleven trillion, three hundred thirteen billion, one hundred twenty-one million, one hundred ten thousand, three hundred thirty-one".