318267641 has 2 divisors, whose sum is σ = 318267642. Its totient is φ = 318267640.

The previous prime is 318267623. The next prime is 318267647. The reversal of 318267641 is 146762813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209670400 + 108597241 = 14480^2 + 10421^2 .

It is an emirp because it is prime and its reverse (146762813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318267641 - 2¹⁴ = 318251257 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 318267595 and 318267604.

It is not a weakly prime, because it can be changed into another prime (318267647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159133820 + 159133821.

It is an arithmetic number, because the mean of its divisors is an integer number (159133821).

Almost surely, 2^318267641 is an apocalyptic number.

It is an amenable number.

318267641 is a deficient number, since it is larger than the sum of its proper divisors (1).

318267641 is an equidigital number, since it uses as much as digits as its factorization.

318267641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 318267641 is about 17840.0572028231. The cubic root of 318267641 is about 682.7538561986.

The spelling of 318267641 in words is "three hundred eighteen million, two hundred sixty-seven thousand, six hundred forty-one".