31665502727042 has 6 divisors (see below), whose sum is σ = 47498266027683. Its totient is φ = 15832747384482.

The previous prime is 31665502727039. The next prime is 31665502727057. The reversal of 31665502727042 is 24072720556613.

It can be written as a sum of positive squares in only one way, i.e., 15832751363521 + 15832751363521 = 3979039^2 + 3979039^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3979039.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5968559 + ... + 9947597.

Almost surely, 2^{31665502727042} is an apocalyptic number.

31665502727042 is a deficient number, since it is larger than the sum of its proper divisors (15832763300641).

31665502727042 is an frugal number, since it uses more digits than its factorization.

31665502727042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958080 (or 3979041 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 31665502727042 in words is "thirty-one trillion, six hundred sixty-five billion, five hundred two million, seven hundred twenty-seven thousand, forty-two".