315449 has 2 divisors, whose sum is σ = 315450. Its totient is φ = 315448.

The previous prime is 315437. The next prime is 315451. The reversal of 315449 is 944513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313600 + 1849 = 560^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 315449 - 2⁸ = 315193 is a prime.

It is a Sophie Germain prime.

Together with 315451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (315409) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157724 + 157725.

It is an arithmetic number, because the mean of its divisors is an integer number (157725).

2³¹⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

315449 is a deficient number, since it is larger than the sum of its proper divisors (1).

315449 is an equidigital number, since it uses as much as digits as its factorization.

315449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 315449 is about 561.6484665696. The cubic root of 315449 is about 68.0732342491.

The spelling of 315449 in words is "three hundred fifteen thousand, four hundred forty-nine".