31823018036 has 6 divisors (see below), whose sum is σ = 55690281570. Its totient is φ = 15911509016.

The previous prime is 31823018023. The next prime is 31823018069. The reversal of 31823018036 is 63081032813.

It can be written as a sum of positive squares in only one way, i.e., 26019625636 + 5803392400 = 161306^2 + 76180^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31823017987 and 31823018005.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3977877251 + ... + 3977877258.

It is an arithmetic number, because the mean of its divisors is an integer number (9281713595).

Almost surely, 2^31823018036 is an apocalyptic number.

It is an amenable number.

31823018036 is a deficient number, since it is larger than the sum of its proper divisors (23867263534).

31823018036 is a wasteful number, since it uses less digits than its factorization.

31823018036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955754513 (or 7955754511 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 31823018036 in words is "thirty-one billion, eight hundred twenty-three million, eighteen thousand, thirty-six".