31311211123124 has 6 divisors (see below), whose sum is σ = 54794619465474. Its totient is φ = 15655605561560.

The previous prime is 31311211123111. The next prime is 31311211123169. The reversal of 31311211123124 is 42132111211313.

It can be written as a sum of positive squares in only one way, i.e., 25903112040100 + 5408099083024 = 5089510^2 + 2325532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31311211123093 and 31311211123102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3913901390387 + ... + 3913901390394.

It is an arithmetic number, because the mean of its divisors is an integer number (9132436577579).

Almost surely, 2^{31311211123124} is an apocalyptic number.

It is an amenable number.

31311211123124 is a deficient number, since it is larger than the sum of its proper divisors (23483408342350).

31311211123124 is a wasteful number, since it uses less digits than its factorization.

31311211123124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7827802780785 (or 7827802780783 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

Adding to 31311211123124 its reverse (42132111211313), we get a palindrome (73443322334437).

The spelling of 31311211123124 in words is "thirty-one trillion, three hundred eleven billion, two hundred eleven million, one hundred twenty-three thousand, one hundred twenty-four".