31103331102123 has 24 divisors (see below), whose sum is σ = 48367859355648. Its totient is φ = 17726926459536.

The previous prime is 31103331102071. The next prime is 31103331102139. The reversal of 31103331102123 is 32120113330113.

It is not a de Polignac number, because 31103331102123 - 2⁹ = 31103331101611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31103331102093 and 31103331102102.

It is not an unprimeable number, because it can be changed into a prime (31103331102143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276167311 + ... + 276279912.

It is an arithmetic number, because the mean of its divisors is an integer number (2015327473152).

Almost surely, 2^{31103331102123} is an apocalyptic number.

31103331102123 is a deficient number, since it is larger than the sum of its proper divisors (17264528253525).

31103331102123 is a wasteful number, since it uses less digits than its factorization.

31103331102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552447623 (or 552447616 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 31103331102123 its reverse (32120113330113), we get a palindrome (63223444432236).

The spelling of 31103331102123 in words is "thirty-one trillion, one hundred three billion, three hundred thirty-one million, one hundred two thousand, one hundred twenty-three".