2731112861 has 2 divisors, whose sum is σ = 2731112862. Its totient is φ = 2731112860.

The previous prime is 2731112837. The next prime is 2731112873. The reversal of 2731112861 is 1682111372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2711805625 + 19307236 = 52075^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731112861 - 2¹⁰ = 2731111837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2731118861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365556430 + 1365556431.

It is an arithmetic number, because the mean of its divisors is an integer number (1365556431).

Almost surely, 2^2731112861 is an apocalyptic number.

It is an amenable number.

2731112861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2731112861 is an equidigital number, since it uses as much as digits as its factorization.

2731112861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 2731112861 is about 52260.0503348399. The cubic root of 2731112861 is about 1397.8048696375.

The spelling of 2731112861 in words is "two billion, seven hundred thirty-one million, one hundred twelve thousand, eight hundred sixty-one".