315723047 has 4 divisors (see below), whose sum is σ = 329450160. Its totient is φ = 301995936.

The previous prime is 315723043. The next prime is 315723049. The reversal of 315723047 is 740327513.

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

It is a cyclic number.

It is not a de Polignac number, because 315723047 - 2² = 315723043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315723041) 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, 6863522 + ... + 6863567.

It is an arithmetic number, because the mean of its divisors is an integer number (82362540).

Almost surely, 2^315723047 is an apocalyptic number.

315723047 is a deficient number, since it is larger than the sum of its proper divisors (13727113).

315723047 is a wasteful number, since it uses less digits than its factorization.

315723047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13727112.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 315723047 is about 17768.5972153122. The cubic root of 315723047 is about 680.9294146637.

The spelling of 315723047 in words is "three hundred fifteen million, seven hundred twenty-three thousand, forty-seven".