247315 has 4 divisors (see below), whose sum is σ = 296784. Its totient is φ = 197848.

The previous prime is 247309. The next prime is 247337. The reversal of 247315 is 513742.

247315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 247315 - 2⁹ = 246803 is a prime.

It is a super-2 number, since 2×247315² = 122329418450, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24727 + ... + 24736.

It is an arithmetic number, because the mean of its divisors is an integer number (74196).

2²⁴⁷³¹⁵ is an apocalyptic number.

247315 is a deficient number, since it is larger than the sum of its proper divisors (49469).

247315 is an equidigital number, since it uses as much as digits as its factorization.

247315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49468.

The product of its digits is 840, while the sum is 22.

The square root of 247315 is about 497.3077517996. The cubic root of 247315 is about 62.7697143921.

The spelling of 247315 in words is "two hundred forty-seven thousand, three hundred fifteen".