2731195 has 4 divisors (see below), whose sum is σ = 3277440. Its totient is φ = 2184952.

The previous prime is 2731189. The next prime is 2731199. The reversal of 2731195 is 5911372.

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

It is a cyclic number.

It is not a de Polignac number, because 2731195 - 2³ = 2731187 is a prime.

It is a super-2 number, since 2×2731195² = 14918852256050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731199) 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 3 ways as a sum of consecutive naturals, for example, 273115 + ... + 273124.

It is an arithmetic number, because the mean of its divisors is an integer number (819360).

2^2731195 is an apocalyptic number.

2731195 is a deficient number, since it is larger than the sum of its proper divisors (546245).

2731195 is an equidigital number, since it uses as much as digits as its factorization.

2731195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546244.

The product of its digits is 1890, while the sum is 28.

The square root of 2731195 is about 1652.6327480720. The cubic root of 2731195 is about 139.7818882624.

It can be divided in two parts, 2731 and 195, that added together give a triangular number (2926 = T₇₆).

The spelling of 2731195 in words is "two million, seven hundred thirty-one thousand, one hundred ninety-five".