2681311 has 4 divisors (see below), whose sum is σ = 2773800. Its totient is φ = 2588824.

The previous prime is 2681297. The next prime is 2681321. The reversal of 2681311 is 1131862.

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 2681311 - 2⁷ = 2681183 is a prime.

It is a Duffinian number.

2681311 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681321) 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, 46201 + ... + 46258.

It is an arithmetic number, because the mean of its divisors is an integer number (693450).

2^2681311 is an apocalyptic number.

2681311 is a deficient number, since it is larger than the sum of its proper divisors (92489).

2681311 is an equidigital number, since it uses as much as digits as its factorization.

2681311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92488.

The product of its digits is 288, while the sum is 22.

The square root of 2681311 is about 1637.4709157722. The cubic root of 2681311 is about 138.9256369487.

It can be divided in two parts, 2681 and 311, that added together give a palindrome (2992).

The spelling of 2681311 in words is "two million, six hundred eighty-one thousand, three hundred eleven".