313042321143161 has 2 divisors, whose sum is σ = 313042321143162. Its totient is φ = 313042321143160.

The previous prime is 313042321143127. The next prime is 313042321143163. The reversal of 313042321143161 is 161341123240313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214287321765136 + 98754999378025 = 14638556^2 + 9937555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313042321143161 is a prime.

Together with 313042321143163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313042321143163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156521160571580 + 156521160571581.

It is an arithmetic number, because the mean of its divisors is an integer number (156521160571581).

Almost surely, 2^{313042321143161} is an apocalyptic number.

It is an amenable number.

313042321143161 is a deficient number, since it is larger than the sum of its proper divisors (1).

313042321143161 is an equidigital number, since it uses as much as digits as its factorization.

313042321143161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 313042321143161 its reverse (161341123240313), we get a palindrome (474383444383474).

The spelling of 313042321143161 in words is "three hundred thirteen trillion, forty-two billion, three hundred twenty-one million, one hundred forty-three thousand, one hundred sixty-one".