315385249 has 2 divisors, whose sum is σ = 315385250. Its totient is φ = 315385248.

The previous prime is 315385219. The next prime is 315385253. The reversal of 315385249 is 942583513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266832225 + 48553024 = 16335^2 + 6968^2 .

It is a cyclic number.

It is not a de Polignac number, because 315385249 - 2²⁵ = 281830817 is a prime.

It is equal to p_17039668 and since 315385249 and 17039668 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (315385219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157692624 + 157692625.

It is an arithmetic number, because the mean of its divisors is an integer number (157692625).

Almost surely, 2^315385249 is an apocalyptic number.

It is an amenable number.

315385249 is a deficient number, since it is larger than the sum of its proper divisors (1).

315385249 is an equidigital number, since it uses as much as digits as its factorization.

315385249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 315385249 is about 17759.0891939874. The cubic root of 315385249 is about 680.6864816264.

The spelling of 315385249 in words is "three hundred fifteen million, three hundred eighty-five thousand, two hundred forty-nine".