315717469 has 2 divisors, whose sum is σ = 315717470. Its totient is φ = 315717468.

The previous prime is 315717463. The next prime is 315717473. The reversal of 315717469 is 964717513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203632900 + 112084569 = 14270^2 + 10587^2 .

It is a cyclic number.

It is not a de Polignac number, because 315717469 - 2⁹ = 315716957 is a prime.

It is a super-2 number, since 2×315717469² = 199355040463531922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315717463) 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, 157858734 + 157858735.

It is an arithmetic number, because the mean of its divisors is an integer number (157858735).

Almost surely, 2^315717469 is an apocalyptic number.

It is an amenable number.

315717469 is a deficient number, since it is larger than the sum of its proper divisors (1).

315717469 is an equidigital number, since it uses as much as digits as its factorization.

315717469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 315717469 is about 17768.4402523125. The cubic root of 315717469 is about 680.9254045598.

The spelling of 315717469 in words is "three hundred fifteen million, seven hundred seventeen thousand, four hundred sixty-nine".