315456409 has 2 divisors, whose sum is σ = 315456410. Its totient is φ = 315456408.

The previous prime is 315456389. The next prime is 315456439. The reversal of 315456409 is 904654513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315417600 + 38809 = 17760^2 + 197^2 .

It is a cyclic number.

It is not a de Polignac number, because 315456409 - 2⁹ = 315455897 is a prime.

It is not a weakly prime, because it can be changed into another prime (315456439) 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, 157728204 + 157728205.

It is an arithmetic number, because the mean of its divisors is an integer number (157728205).

Almost surely, 2^315456409 is an apocalyptic number.

It is an amenable number.

315456409 is a deficient number, since it is larger than the sum of its proper divisors (1).

315456409 is an equidigital number, since it uses as much as digits as its factorization.

315456409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 315456409 is about 17761.0925621145. The cubic root of 315456409 is about 680.7376719380.

The spelling of 315456409 in words is "three hundred fifteen million, four hundred fifty-six thousand, four hundred nine".