315442241 has 2 divisors, whose sum is σ = 315442242. Its totient is φ = 315442240.

The previous prime is 315442223. The next prime is 315442243. The reversal of 315442241 is 142244513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252969025 + 62473216 = 15905^2 + 7904^2 .

It is a cyclic number.

It is not a de Polignac number, because 315442241 - 2⁶ = 315442177 is a prime.

It is a Sophie Germain prime.

Together with 315442243, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 315442241.

It is not a weakly prime, because it can be changed into another prime (315442243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157721120 + 157721121.

It is an arithmetic number, because the mean of its divisors is an integer number (157721121).

Almost surely, 2^315442241 is an apocalyptic number.

It is an amenable number.

315442241 is a deficient number, since it is larger than the sum of its proper divisors (1).

315442241 is an equidigital number, since it uses as much as digits as its factorization.

315442241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 315442241 is about 17760.6937082987. The cubic root of 315442241 is about 680.7274805292.

Adding to 315442241 its reverse (142244513), we get a palindrome (457686754).

The spelling of 315442241 in words is "three hundred fifteen million, four hundred forty-two thousand, two hundred forty-one".