273247013 has 4 divisors (see below), whose sum is σ = 294266028. Its totient is φ = 252228000.

The previous prime is 273246991. The next prime is 273247021. The reversal of 273247013 is 310742372.

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

It can be written as a sum of positive squares in 2 ways, for example, as 165045409 + 108201604 = 12847^2 + 10402^2 .

It is a cyclic number.

It is not a de Polignac number, because 273247013 - 2¹² = 273242917 is a prime.

It is a super-2 number, since 2×273247013² = 149327860226844338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273247043) 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, 10509488 + ... + 10509513.

It is an arithmetic number, because the mean of its divisors is an integer number (73566507).

Almost surely, 2^273247013 is an apocalyptic number.

It is an amenable number.

273247013 is a deficient number, since it is larger than the sum of its proper divisors (21019015).

273247013 is a wasteful number, since it uses less digits than its factorization.

273247013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21019014.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 273247013 is about 16530.1849051969. The cubic root of 273247013 is about 648.9110073188.

Adding to 273247013 its reverse (310742372), we get a palindrome (583989385).

The spelling of 273247013 in words is "two hundred seventy-three million, two hundred forty-seven thousand, thirteen".