316042081 has 2 divisors, whose sum is σ = 316042082. Its totient is φ = 316042080.

The previous prime is 316042079. The next prime is 316042091. The reversal of 316042081 is 180240613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311699025 + 4343056 = 17655^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 316042081 - 2¹ = 316042079 is a prime.

It is a super-2 number, since 2×316042081² = 199765193925621122, which contains 22 as substring.

Together with 316042079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (316042061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158021040 + 158021041.

It is an arithmetic number, because the mean of its divisors is an integer number (158021041).

Almost surely, 2^316042081 is an apocalyptic number.

It is an amenable number.

316042081 is a deficient number, since it is larger than the sum of its proper divisors (1).

316042081 is an equidigital number, since it uses as much as digits as its factorization.

316042081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 316042081 is about 17777.5724158278. The cubic root of 316042081 is about 681.1586942020.

Adding to 316042081 its reverse (180240613), we get a palindrome (496282694).

The spelling of 316042081 in words is "three hundred sixteen million, forty-two thousand, eighty-one".