315247271 has 4 divisors (see below), whose sum is σ = 315767232. Its totient is φ = 314727312.

The previous prime is 315247253. The next prime is 315247301. The reversal of 315247271 is 172742513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172742513 = 9403 ⋅18371.

It is a cyclic number.

It is not a de Polignac number, because 315247271 - 2¹⁰ = 315246247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315247211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259070 + ... + 260283.

It is an arithmetic number, because the mean of its divisors is an integer number (78941808).

Almost surely, 2^315247271 is an apocalyptic number.

315247271 is a deficient number, since it is larger than the sum of its proper divisors (519961).

315247271 is an equidigital number, since it uses as much as digits as its factorization.

315247271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519960.

The product of its digits is 11760, while the sum is 32.

The square root of 315247271 is about 17755.2040540231. The cubic root of 315247271 is about 680.5872025602.

Adding to 315247271 its reverse (172742513), we get a palindrome (487989784).

The spelling of 315247271 in words is "three hundred fifteen million, two hundred forty-seven thousand, two hundred seventy-one".