315745673 has 2 divisors, whose sum is σ = 315745674. Its totient is φ = 315745672.

The previous prime is 315745669. The next prime is 315745687. The reversal of 315745673 is 376547513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285846649 + 29899024 = 16907^2 + 5468^2 .

It is a cyclic number.

It is not a de Polignac number, because 315745673 - 2² = 315745669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315745673.

It is not a weakly prime, because it can be changed into another prime (315745643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157872836 + 157872837.

It is an arithmetic number, because the mean of its divisors is an integer number (157872837).

Almost surely, 2^315745673 is an apocalyptic number.

It is an amenable number.

315745673 is a deficient number, since it is larger than the sum of its proper divisors (1).

315745673 is an equidigital number, since it uses as much as digits as its factorization.

315745673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 41.

The square root of 315745673 is about 17769.2338889441. The cubic root of 315745673 is about 680.9456803339.

The spelling of 315745673 in words is "three hundred fifteen million, seven hundred forty-five thousand, six hundred seventy-three".