31836648323789 has 24 divisors (see below), whose sum is σ = 34148192054760. Its totient is φ = 29643376379904.

The previous prime is 31836648323737. The next prime is 31836648323801. The reversal of 31836648323789 is 98732384663813.

It can be written as a sum of positive squares in 12 ways, for example, as 8021028308164 + 23815620015625 = 2832142^2 + 4880125^2 .

It is not a de Polignac number, because 31836648323789 - 2⁸ = 31836648323533 is a prime.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31836648323719) 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, 937937 + ... + 8034489.

It is an arithmetic number, because the mean of its divisors is an integer number (1422841335615).

Almost surely, 2^{31836648323789} is an apocalyptic number.

It is an amenable number.

31836648323789 is a deficient number, since it is larger than the sum of its proper divisors (2311543730971).

31836648323789 is a wasteful number, since it uses less digits than its factorization.

31836648323789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096769 (or 7096732 counting only the distinct ones).

The product of its digits is 752467968, while the sum is 71.

The spelling of 31836648323789 in words is "thirty-one trillion, eight hundred thirty-six billion, six hundred forty-eight million, three hundred twenty-three thousand, seven hundred eighty-nine".