318645241 has 2 divisors, whose sum is σ = 318645242. Its totient is φ = 318645240.

The previous prime is 318645199. The next prime is 318645281. The reversal of 318645241 is 142546813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297217600 + 21427641 = 17240^2 + 4629^2 .

It is a cyclic number.

It is not a de Polignac number, because 318645241 - 2⁷ = 318645113 is a prime.

It is a super-2 number, since 2×318645241² = 203069579223896162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318645197 and 318645206.

It is not a weakly prime, because it can be changed into another prime (318645281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159322620 + 159322621.

It is an arithmetic number, because the mean of its divisors is an integer number (159322621).

Almost surely, 2^318645241 is an apocalyptic number.

It is an amenable number.

318645241 is a deficient number, since it is larger than the sum of its proper divisors (1).

318645241 is an equidigital number, since it uses as much as digits as its factorization.

318645241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 318645241 is about 17850.6369914353. The cubic root of 318645241 is about 683.0237610770.

The spelling of 318645241 in words is "three hundred eighteen million, six hundred forty-five thousand, two hundred forty-one".