31766648372 has 48 divisors (see below), whose sum is σ = 58733897040. Its totient is φ = 15010265088.

The previous prime is 31766648323. The next prime is 31766648377. The reversal of 31766648372 is 27384666713.

It can be written as a sum of positive squares in 8 ways, for example, as 283114276 + 31483534096 = 16826^2 + 177436^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31766648377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2656118 + ... + 2668050.

It is an arithmetic number, because the mean of its divisors is an integer number (1223622855).

Almost surely, 2^31766648372 is an apocalyptic number.

It is an amenable number.

31766648372 is a deficient number, since it is larger than the sum of its proper divisors (26967248668).

31766648372 is a wasteful number, since it uses less digits than its factorization.

31766648372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12452 (or 12450 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 53.

The spelling of 31766648372 in words is "thirty-one billion, seven hundred sixty-six million, six hundred forty-eight thousand, three hundred seventy-two".