315697945 has 8 divisors (see below), whose sum is σ = 385985736. Its totient is φ = 247792896.

The previous prime is 315697937. The next prime is 315697957. The reversal of 315697945 is 549796513.

It can be written as a sum of positive squares in 4 ways, for example, as 146385801 + 169312144 = 12099^2 + 13012^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315697945 - 2³ = 315697937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 595392 + ... + 595921.

It is an arithmetic number, because the mean of its divisors is an integer number (48248217).

Almost surely, 2^315697945 is an apocalyptic number.

It is an amenable number.

315697945 is a deficient number, since it is larger than the sum of its proper divisors (70287791).

315697945 is a wasteful number, since it uses less digits than its factorization.

315697945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191371.

The product of its digits is 1020600, while the sum is 49.

The square root of 315697945 is about 17767.8908427534. The cubic root of 315697945 is about 680.9113681053.

It can be divided in two parts, 3156 and 97945, that added together give a palindrome (101101).

The spelling of 315697945 in words is "three hundred fifteen million, six hundred ninety-seven thousand, nine hundred forty-five".