247013 has 4 divisors (see below), whose sum is σ = 266028. Its totient is φ = 228000.

The previous prime is 247007. The next prime is 247031. The reversal of 247013 is 310742.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310742 = 2 ⋅155371.

It can be written as a sum of positive squares in 2 ways, for example, as 37249 + 209764 = 193^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 247013 - 2¹⁰ = 245989 is a prime.

It is a super-2 number, since 2×247013² = 122030844338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 246982 and 247000.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247013.

It is not an unprimeable number, because it can be changed into a prime (247073) 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, 9488 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (66507).

2²⁴⁷⁰¹³ is an apocalyptic number.

It is an amenable number.

247013 is a deficient number, since it is larger than the sum of its proper divisors (19015).

247013 is a wasteful number, since it uses less digits than its factorization.

247013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19014.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 247013 is about 497.0040241286. The cubic root of 247013 is about 62.7441543101.

Adding to 247013 its reverse (310742), we get a palindrome (557755).

The spelling of 247013 in words is "two hundred forty-seven thousand, thirteen".