315458947 has 2 divisors, whose sum is σ = 315458948. Its totient is φ = 315458946.

The previous prime is 315458917. The next prime is 315458951. The reversal of 315458947 is 749854513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315458947 - 2¹⁵ = 315426179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315458897 and 315458906.

It is not a weakly prime, because it can be changed into another prime (315458917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157729473 + 157729474.

It is an arithmetic number, because the mean of its divisors is an integer number (157729474).

Almost surely, 2^315458947 is an apocalyptic number.

315458947 is a deficient number, since it is larger than the sum of its proper divisors (1).

315458947 is an equidigital number, since it uses as much as digits as its factorization.

315458947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 315458947 is about 17761.1640102782. The cubic root of 315458947 is about 680.7394975548.

The spelling of 315458947 in words is "three hundred fifteen million, four hundred fifty-eight thousand, nine hundred forty-seven".