315745723 has 2 divisors, whose sum is σ = 315745724. Its totient is φ = 315745722.

The previous prime is 315745721. The next prime is 315745739. The reversal of 315745723 is 327547513.

It is a weak prime.

It is an emirp because it is prime and its reverse (327547513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315745723 - 2¹ = 315745721 is a prime.

Together with 315745721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (315745721) 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 as a sum of consecutive naturals, namely, 157872861 + 157872862.

It is an arithmetic number, because the mean of its divisors is an integer number (157872862).

Almost surely, 2^315745723 is an apocalyptic number.

315745723 is a deficient number, since it is larger than the sum of its proper divisors (1).

315745723 is an equidigital number, since it uses as much as digits as its factorization.

315745723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 37.

The square root of 315745723 is about 17769.2352958702. The cubic root of 315745723 is about 680.9457162777.

The spelling of 315745723 in words is "three hundred fifteen million, seven hundred forty-five thousand, seven hundred twenty-three".