315371047 has 2 divisors, whose sum is σ = 315371048. Its totient is φ = 315371046.

The previous prime is 315370997. The next prime is 315371059. The reversal of 315371047 is 740173513.

It is a strong prime.

It is an emirp because it is prime and its reverse (740173513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315371047 - 2⁷ = 315370919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315371087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157685523 + 157685524.

It is an arithmetic number, because the mean of its divisors is an integer number (157685524).

Almost surely, 2^315371047 is an apocalyptic number.

315371047 is a deficient number, since it is larger than the sum of its proper divisors (1).

315371047 is an equidigital number, since it uses as much as digits as its factorization.

315371047 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 315371047 is about 17758.6893378988. The cubic root of 315371047 is about 680.6762642235.

The spelling of 315371047 in words is "three hundred fifteen million, three hundred seventy-one thousand, forty-seven".