315730147 has 2 divisors, whose sum is σ = 315730148. Its totient is φ = 315730146.

The previous prime is 315730111. The next prime is 315730153. The reversal of 315730147 is 741037513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315730147 - 2¹⁹ = 315205859 is a prime.

It is not a weakly prime, because it can be changed into another prime (315730187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157865073 + 157865074.

It is an arithmetic number, because the mean of its divisors is an integer number (157865074).

Almost surely, 2^315730147 is an apocalyptic number.

315730147 is a deficient number, since it is larger than the sum of its proper divisors (1).

315730147 is an equidigital number, since it uses as much as digits as its factorization.

315730147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 315730147 is about 17768.7970048622. The cubic root of 315730147 is about 680.9345188868.

The spelling of 315730147 in words is "three hundred fifteen million, seven hundred thirty thousand, one hundred forty-seven".