2731349273 has 4 divisors (see below), whose sum is σ = 2736592308. Its totient is φ = 2726106240.

The previous prime is 2731349171. The next prime is 2731349279. The reversal of 2731349273 is 3729431372.

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 2007308809 + 724040464 = 44803^2 + 26908^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731349273 - 2⁸ = 2731349017 is a prime.

It is a super-2 number, since 2×2731349273² = 14920537702235257058, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2731349273.

It is not an unprimeable number, because it can be changed into a prime (2731349279) 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, 2620736 + ... + 2621777.

It is an arithmetic number, because the mean of its divisors is an integer number (684148077).

Almost surely, 2^2731349273 is an apocalyptic number.

It is an amenable number.

2731349273 is a deficient number, since it is larger than the sum of its proper divisors (5243035).

2731349273 is an equidigital number, since it uses as much as digits as its factorization.

2731349273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243034.

The product of its digits is 190512, while the sum is 41.

The square root of 2731349273 is about 52262.3121666082. The cubic root of 2731349273 is about 1397.8452009758.

The spelling of 2731349273 in words is "two billion, seven hundred thirty-one million, three hundred forty-nine thousand, two hundred seventy-three".