2331287 has 4 divisors (see below), whose sum is σ = 2664336. Its totient is φ = 1998240.

The previous prime is 2331283. The next prime is 2331299. The reversal of 2331287 is 7821332.

2331287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2331287 - 2² = 2331283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331283) 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 3 ways as a sum of consecutive naturals, for example, 166514 + ... + 166527.

It is an arithmetic number, because the mean of its divisors is an integer number (666084).

2^2331287 is an apocalyptic number.

2331287 is a deficient number, since it is larger than the sum of its proper divisors (333049).

2331287 is an equidigital number, since it uses as much as digits as its factorization.

2331287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333048.

The product of its digits is 2016, while the sum is 26.

The square root of 2331287 is about 1526.8552649154. The cubic root of 2331287 is about 132.5964552209.

The spelling of 2331287 in words is "two million, three hundred thirty-one thousand, two hundred eighty-seven".