313210320915161 has 2 divisors, whose sum is σ = 313210320915162. Its totient is φ = 313210320915160.

The previous prime is 313210320915143. The next prime is 313210320915197. The reversal of 313210320915161 is 161519023012313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164939052979600 + 148271267935561 = 12842860^2 + 12176669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313210320915161 is a prime.

It is not a weakly prime, because it can be changed into another prime (313210320915461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156605160457580 + 156605160457581.

It is an arithmetic number, because the mean of its divisors is an integer number (156605160457581).

Almost surely, 2^{313210320915161} is an apocalyptic number.

It is an amenable number.

313210320915161 is a deficient number, since it is larger than the sum of its proper divisors (1).

313210320915161 is an equidigital number, since it uses as much as digits as its factorization.

313210320915161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

Adding to 313210320915161 its reverse (161519023012313), we get a palindrome (474729343927474).

The spelling of 313210320915161 in words is "three hundred thirteen trillion, two hundred ten billion, three hundred twenty million, nine hundred fifteen thousand, one hundred sixty-one".