315306847 has 4 divisors (see below), whose sum is σ = 315345496. Its totient is φ = 315268200.

The previous prime is 315306841. The next prime is 315306883. The reversal of 315306847 is 748603513.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 748603513 = 7 ⋅106943359.

It is a cyclic number.

It is not a de Polignac number, because 315306847 - 2²⁷ = 181089119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315306841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773 + ... + 25174.

It is an arithmetic number, because the mean of its divisors is an integer number (78836374).

Almost surely, 2^315306847 is an apocalyptic number.

315306847 is a deficient number, since it is larger than the sum of its proper divisors (38649).

315306847 is a wasteful number, since it uses less digits than its factorization.

315306847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38648.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 315306847 is about 17756.8816800698. The cubic root of 315306847 is about 680.6300727270.

The spelling of 315306847 in words is "three hundred fifteen million, three hundred six thousand, eight hundred forty-seven".