3191731732073 has 2 divisors, whose sum is σ = 3191731732074. Its totient is φ = 3191731732072.

The previous prime is 3191731732031. The next prime is 3191731732117. The reversal of 3191731732073 is 3702371371913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2177253704704 + 1014478027369 = 1475552^2 + 1007213^2 .

It is a cyclic number.

It is not a de Polignac number, because 3191731732073 - 2¹⁸ = 3191731469929 is a prime.

It is not a weakly prime, because it can be changed into another prime (3191731732873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1595865866036 + 1595865866037.

It is an arithmetic number, because the mean of its divisors is an integer number (1595865866037).

Almost surely, 2^{3191731732073} is an apocalyptic number.

It is an amenable number.

3191731732073 is a deficient number, since it is larger than the sum of its proper divisors (1).

3191731732073 is an equidigital number, since it uses as much as digits as its factorization.

3191731732073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 500094, while the sum is 47.

The spelling of 3191731732073 in words is "three trillion, one hundred ninety-one billion, seven hundred thirty-one million, seven hundred thirty-two thousand, seventy-three".