316521362225273 has 2 divisors, whose sum is σ = 316521362225274. Its totient is φ = 316521362225272.

The previous prime is 316521362225251. The next prime is 316521362225297. The reversal of 316521362225273 is 372522263125613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162383972542009 + 154137389683264 = 12742997^2 + 12415208^2 .

It is an emirp because it is prime and its reverse (372522263125613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316521362225273 - 2⁸ = 316521362225017 is a prime.

It is a super-2 number, since 2×316521362225273² (a number of 30 digits) contains 22 as substring.

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 (316521362225203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158260681112636 + 158260681112637.

It is an arithmetic number, because the mean of its divisors is an integer number (158260681112637).

Almost surely, 2^{316521362225273} is an apocalyptic number.

It is an amenable number.

316521362225273 is a deficient number, since it is larger than the sum of its proper divisors (1).

316521362225273 is an equidigital number, since it uses as much as digits as its factorization.

316521362225273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 50.

The spelling of 316521362225273 in words is "three hundred sixteen trillion, five hundred twenty-one billion, three hundred sixty-two million, two hundred twenty-five thousand, two hundred seventy-three".