315447241 has 2 divisors, whose sum is σ = 315447242. Its totient is φ = 315447240.

The previous prime is 315447203. The next prime is 315447247. The reversal of 315447241 is 142744513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310781641 + 4665600 = 17629^2 + 2160^2 .

It is an emirp because it is prime and its reverse (142744513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315447241 is a prime.

It is not a weakly prime, because it can be changed into another prime (315447247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157723620 + 157723621.

It is an arithmetic number, because the mean of its divisors is an integer number (157723621).

Almost surely, 2^315447241 is an apocalyptic number.

It is an amenable number.

315447241 is a deficient number, since it is larger than the sum of its proper divisors (1).

315447241 is an equidigital number, since it uses as much as digits as its factorization.

315447241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 315447241 is about 17760.8344680085. The cubic root of 315447241 is about 680.7310771933.

It can be divided in two parts, 3154472 and 41, that added together give a palindrome (3154513).

The spelling of 315447241 in words is "three hundred fifteen million, four hundred forty-seven thousand, two hundred forty-one".