315854797 has 2 divisors, whose sum is σ = 315854798. Its totient is φ = 315854796.

The previous prime is 315854783. The next prime is 315854809. The reversal of 315854797 is 797458513.

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., 226382116 + 89472681 = 15046^2 + 9459^2 .

It is an emirp because it is prime and its reverse (797458513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315854797 is a prime.

It is a super-2 number, since 2×315854797² = 199528505575822418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 315854797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315854197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157927398 + 157927399.

It is an arithmetic number, because the mean of its divisors is an integer number (157927399).

Almost surely, 2^315854797 is an apocalyptic number.

It is an amenable number.

315854797 is a deficient number, since it is larger than the sum of its proper divisors (1).

315854797 is an equidigital number, since it uses as much as digits as its factorization.

315854797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 49.

The square root of 315854797 is about 17772.3042118910. The cubic root of 315854797 is about 681.0241178909.

The spelling of 315854797 in words is "three hundred fifteen million, eight hundred fifty-four thousand, seven hundred ninety-seven".