2311287 has 8 divisors (see below), whose sum is σ = 3361920. Its totient is φ = 1400760.

The previous prime is 2311249. The next prime is 2311289. The reversal of 2311287 is 7821132.

2311287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2311287 - 2⁶ = 2311223 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

2311287 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34987 + ... + 35052.

It is an arithmetic number, because the mean of its divisors is an integer number (420240).

2^2311287 is an apocalyptic number.

2311287 is a deficient number, since it is larger than the sum of its proper divisors (1050633).

2311287 is a wasteful number, since it uses less digits than its factorization.

2311287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70053.

The product of its digits is 672, while the sum is 24.

The square root of 2311287 is about 1520.2917483167. The cubic root of 2311287 is about 132.2161861467.

The spelling of 2311287 in words is "two million, three hundred eleven thousand, two hundred eighty-seven".