3111331120123 has 4 divisors (see below), whose sum is σ = 3112249191120. Its totient is φ = 3110413049128.

The previous prime is 3111331120103. The next prime is 3111331120133. The reversal of 3111331120123 is 3210211331113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3111331120123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3111331120094 and 3111331120103.

It is not an unprimeable number, because it can be changed into a prime (3111331120103) 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, 459030415 + ... + 459037192.

It is an arithmetic number, because the mean of its divisors is an integer number (778062297780).

Almost surely, 2^{3111331120123} is an apocalyptic number.

3111331120123 is a deficient number, since it is larger than the sum of its proper divisors (918070997).

3111331120123 is an equidigital number, since it uses as much as digits as its factorization.

3111331120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918070996.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 3111331120123 its reverse (3210211331113), we get a palindrome (6321542451236).

The spelling of 3111331120123 in words is "three trillion, one hundred eleven billion, three hundred thirty-one million, one hundred twenty thousand, one hundred twenty-three".