2731291 has 2 divisors, whose sum is σ = 2731292. Its totient is φ = 2731290.

The previous prime is 2731279. The next prime is 2731327. The reversal of 2731291 is 1921372.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2731291 - 2⁷ = 2731163 is a prime.

It is not a weakly prime, because it can be changed into another prime (2731241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365645 + 1365646.

It is an arithmetic number, because the mean of its divisors is an integer number (1365646).

2^2731291 is an apocalyptic number.

2731291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2731291 is an equidigital number, since it uses as much as digits as its factorization.

2731291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 25.

The square root of 2731291 is about 1652.6617923822. The cubic root of 2731291 is about 139.7835259953.

The spelling of 2731291 in words is "two million, seven hundred thirty-one thousand, two hundred ninety-one".