31320323102273 has 2 divisors, whose sum is σ = 31320323102274. Its totient is φ = 31320323102272.

The previous prime is 31320323102261. The next prime is 31320323102359. The reversal of 31320323102273 is 37220132302313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25349694383104 + 5970628719169 = 5034848^2 + 2443487^2 .

It is an emirp because it is prime and its reverse (37220132302313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31320323102273 - 2⁸ = 31320323102017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31320323102573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660161551136 + 15660161551137.

It is an arithmetic number, because the mean of its divisors is an integer number (15660161551137).

Almost surely, 2^{31320323102273} is an apocalyptic number.

It is an amenable number.

31320323102273 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320323102273 is an equidigital number, since it uses as much as digits as its factorization.

31320323102273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 32.

Adding to 31320323102273 its reverse (37220132302313), we get a palindrome (68540455404586).

The spelling of 31320323102273 in words is "thirty-one trillion, three hundred twenty billion, three hundred twenty-three million, one hundred two thousand, two hundred seventy-three".