247713313 has 4 divisors (see below), whose sum is σ = 247759408. Its totient is φ = 247667220.

The previous prime is 247713299. The next prime is 247713353. The reversal of 247713313 is 313317742.

247713313 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313317742 = 2 ⋅156658871.

It is a cyclic number.

It is not a de Polignac number, because 247713313 - 2¹⁷ = 247582241 is a prime.

It is a super-2 number, since 2×247713313² = 122723770874871938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247713353) 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, 13731 + ... + 26152.

It is an arithmetic number, because the mean of its divisors is an integer number (61939852).

Almost surely, 2^247713313 is an apocalyptic number.

It is an amenable number.

247713313 is a deficient number, since it is larger than the sum of its proper divisors (46095).

247713313 is an equidigital number, since it uses as much as digits as its factorization.

247713313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46094.

The product of its digits is 10584, while the sum is 31.

The square root of 247713313 is about 15738.9107945880. The cubic root of 247713313 is about 628.0339422403.

The spelling of 247713313 in words is "two hundred forty-seven million, seven hundred thirteen thousand, three hundred thirteen".