315005305 has 4 divisors (see below), whose sum is σ = 378006372. Its totient is φ = 252004240.

The previous prime is 315005303. The next prime is 315005323. The reversal of 315005305 is 503500513.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37982569 + 277022736 = 6163^2 + 16644^2 .

It is not a de Polignac number, because 315005305 - 2¹ = 315005303 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315005303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31500526 + ... + 31500535.

It is an arithmetic number, because the mean of its divisors is an integer number (94501593).

Almost surely, 2^315005305 is an apocalyptic number.

It is an amenable number.

315005305 is a deficient number, since it is larger than the sum of its proper divisors (63001067).

315005305 is an equidigital number, since it uses as much as digits as its factorization.

315005305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63001066.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 315005305 is about 17748.3888001137. The cubic root of 315005305 is about 680.4130312256.

Adding to 315005305 its reverse (503500513), we get a palindrome (818505818).

The spelling of 315005305 in words is "three hundred fifteen million, five thousand, three hundred five".