3111313110021 has 24 divisors (see below), whose sum is σ = 4496201498880. Its totient is φ = 2073247836000.

The previous prime is 3111313110013. The next prime is 3111313110047. The reversal of 3111313110021 is 1200113131113.

It is not a de Polignac number, because 3111313110021 - 2³ = 3111313110013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3111313109976 and 3111313110003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111313110221) 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 23 ways as a sum of consecutive naturals, for example, 242666791 + ... + 242679611.

It is an arithmetic number, because the mean of its divisors is an integer number (187341729120).

Almost surely, 2^{3111313110021} is an apocalyptic number.

It is an amenable number.

3111313110021 is a deficient number, since it is larger than the sum of its proper divisors (1384888388859).

3111313110021 is a wasteful number, since it uses less digits than its factorization.

3111313110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23217 (or 23214 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 3111313110021 its reverse (1200113131113), we get a palindrome (4311426241134).

The spelling of 3111313110021 in words is "three trillion, one hundred eleven billion, three hundred thirteen million, one hundred ten thousand, twenty-one".