3111031313123 has 4 divisors (see below), whose sum is σ = 3121649167728. Its totient is φ = 3100413458520.

The previous prime is 3111031313111. The next prime is 3111031313179. The reversal of 3111031313123 is 3213131301113.

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 3111031313123 - 2²² = 3111027118819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3111031313323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5308926863 + ... + 5308927448.

It is an arithmetic number, because the mean of its divisors is an integer number (780412291932).

Almost surely, 2^{3111031313123} is an apocalyptic number.

3111031313123 is a deficient number, since it is larger than the sum of its proper divisors (10617854605).

3111031313123 is a wasteful number, since it uses less digits than its factorization.

3111031313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10617854604.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 3111031313123 its reverse (3213131301113), we get a palindrome (6324162614236).

The spelling of 3111031313123 in words is "three trillion, one hundred eleven billion, thirty-one million, three hundred thirteen thousand, one hundred twenty-three".