318326081 has 2 divisors, whose sum is σ = 318326082. Its totient is φ = 318326080.

The previous prime is 318326039. The next prime is 318326087. The reversal of 318326081 is 180623813.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304188481 + 14137600 = 17441^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 318326081 - 2⁶ = 318326017 is a prime.

It is a super-2 number, since 2×318326081² = 202662987689637122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (318326087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159163040 + 159163041.

It is an arithmetic number, because the mean of its divisors is an integer number (159163041).

Almost surely, 2^318326081 is an apocalyptic number.

It is an amenable number.

318326081 is a deficient number, since it is larger than the sum of its proper divisors (1).

318326081 is an equidigital number, since it uses as much as digits as its factorization.

318326081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 318326081 is about 17841.6950147681. The cubic root of 318326081 is about 682.7956425112.

Adding to 318326081 its reverse (180623813), we get a palindrome (498949894).

The spelling of 318326081 in words is "three hundred eighteen million, three hundred twenty-six thousand, eighty-one".