315304645 has 4 divisors (see below), whose sum is σ = 378365580. Its totient is φ = 252243712.

The previous prime is 315304643. The next prime is 315304663. The reversal of 315304645 is 546403513.

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 85266756 + 230037889 = 9234^2 + 15167^2 .

It is a cyclic number.

It is not a de Polignac number, because 315304645 - 2¹ = 315304643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315304643) 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, 31530460 + ... + 31530469.

It is an arithmetic number, because the mean of its divisors is an integer number (94591395).

Almost surely, 2^315304645 is an apocalyptic number.

It is an amenable number.

315304645 is a deficient number, since it is larger than the sum of its proper divisors (63060935).

315304645 is an equidigital number, since it uses as much as digits as its factorization.

315304645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63060934.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 315304645 is about 17756.8196758316. The cubic root of 315304645 is about 680.6284882906.

The spelling of 315304645 in words is "three hundred fifteen million, three hundred four thousand, six hundred forty-five".