31968934692473 has 2 divisors, whose sum is σ = 31968934692474. Its totient is φ = 31968934692472.

The previous prime is 31968934692427. The next prime is 31968934692481. The reversal of 31968934692473 is 37429643986913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31847421795904 + 121512896569 = 5643352^2 + 348587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31968934692473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31968934692473.

It is not a weakly prime, because it can be changed into another prime (31968934292473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15984467346236 + 15984467346237.

It is an arithmetic number, because the mean of its divisors is an integer number (15984467346237).

Almost surely, 2^{31968934692473} is an apocalyptic number.

It is an amenable number.

31968934692473 is a deficient number, since it is larger than the sum of its proper divisors (1).

31968934692473 is an equidigital number, since it uses as much as digits as its factorization.

31968934692473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1269789696, while the sum is 74.

The spelling of 31968934692473 in words is "thirty-one trillion, nine hundred sixty-eight billion, nine hundred thirty-four million, six hundred ninety-two thousand, four hundred seventy-three".