2731084857 has 10 divisors (see below), whose sum is σ = 4079768858. Its totient is φ = 1820723184.

The previous prime is 2731084849. The next prime is 2731084877. The reversal of 2731084857 is 7584801372.

It can be written as a sum of positive squares in only one way, i.e., 2244485376 + 486599481 = 47376^2 + 22059^2 .

It is not a de Polignac number, because 2731084857 - 2³ = 2731084849 is a prime.

It is a super-2 number, since 2×2731084857² = 14917648992269420898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2731084877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16858468 + ... + 16858629.

Almost surely, 2^2731084857 is an apocalyptic number.

2731084857 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2731084857 is a deficient number, since it is larger than the sum of its proper divisors (1348684001).

2731084857 is an equidigital number, since it uses as much as digits as its factorization.

2731084857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33717109 (or 33717100 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 2731084857 is about 52259.7824048283. The cubic root of 2731084857 is about 1397.8000920660.

The spelling of 2731084857 in words is "two billion, seven hundred thirty-one million, eighty-four thousand, eight hundred fifty-seven".