31217726483984 has 20 divisors (see below), whose sum is σ = 61959572992380. Its totient is φ = 15228159260160.

The previous prime is 31217726483969. The next prime is 31217726484013. The reversal of 31217726483984 is 48938462771213.

It can be written as a sum of positive squares in 2 ways, for example, as 8941894090000 + 22275832393984 = 2990300^2 + 4719728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31217726483984.

It is an unprimeable number.

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, 23793998189 + ... + 23793999500.

It is an arithmetic number, because the mean of its divisors is an integer number (3097978649619).

Almost surely, 2^{31217726483984} is an apocalyptic number.

It is an amenable number.

31217726483984 is a deficient number, since it is larger than the sum of its proper divisors (30741846508396).

31217726483984 is a wasteful number, since it uses less digits than its factorization.

31217726483984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47587997738 (or 47587997732 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 65.

The spelling of 31217726483984 in words is "thirty-one trillion, two hundred seventeen billion, seven hundred twenty-six million, four hundred eighty-three thousand, nine hundred eighty-four".