31812327748 has 6 divisors (see below), whose sum is σ = 55671573566. Its totient is φ = 15906163872.

The previous prime is 31812327737. The next prime is 31812327761. The reversal of 31812327748 is 84772321813.

It can be written as a sum of positive squares in only one way, i.e., 19698683904 + 12113643844 = 140352^2 + 110062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31812327698 and 31812327707.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3976540965 + ... + 3976540972.

Almost surely, 2^31812327748 is an apocalyptic number.

It is an amenable number.

31812327748 is a deficient number, since it is larger than the sum of its proper divisors (23859245818).

31812327748 is a wasteful number, since it uses less digits than its factorization.

31812327748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953081941 (or 7953081939 counting only the distinct ones).

The product of its digits is 451584, while the sum is 46.

The spelling of 31812327748 in words is "thirty-one billion, eight hundred twelve million, three hundred twenty-seven thousand, seven hundred forty-eight".