247315283 has 4 divisors (see below), whose sum is σ = 247370928. Its totient is φ = 247259640.

The previous prime is 247315273. The next prime is 247315301. The reversal of 247315283 is 382513742.

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 247315283 - 2¹² = 247311187 is a prime.

It is a super-2 number, since 2×247315283² = 122329698410740178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247315213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20516 + ... + 30257.

It is an arithmetic number, because the mean of its divisors is an integer number (61842732).

Almost surely, 2^247315283 is an apocalyptic number.

247315283 is a deficient number, since it is larger than the sum of its proper divisors (55645).

247315283 is an equidigital number, since it uses as much as digits as its factorization.

247315283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55644.

The product of its digits is 40320, while the sum is 35.

The square root of 247315283 is about 15726.2609351365. The cubic root of 247315283 is about 627.6973833429.

The spelling of 247315283 in words is "two hundred forty-seven million, three hundred fifteen thousand, two hundred eighty-three".