315005 has 6 divisors (see below), whose sum is σ = 379518. Its totient is φ = 251000.

The previous prime is 314989. The next prime is 315011. The reversal of 315005 is 500513.

It can be written as a sum of positive squares in only one way, i.e., 252004 + 63001 = 502^2 + 251^2 .

It is not a de Polignac number, because 315005 - 2⁴ = 314989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (63253).

2³¹⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

315005 is a deficient number, since it is larger than the sum of its proper divisors (64513).

315005 is an frugal number, since it uses more digits than its factorization.

315005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 315005 is about 561.2530623524. The cubic root of 315005 is about 68.0412811625.

Adding to 315005 its reverse (500513), we get a palindrome (815518).

The spelling of 315005 in words is "three hundred fifteen thousand, five".