2431009 has 4 divisors (see below), whose sum is σ = 2778304. Its totient is φ = 2083716.

The previous prime is 2431007. The next prime is 2431049. The reversal of 2431009 is 9001342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2431009 - 2¹ = 2431007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2431003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173637 + ... + 173650.

It is an arithmetic number, because the mean of its divisors is an integer number (694576).

2^2431009 is an apocalyptic number.

It is an amenable number.

2431009 is a deficient number, since it is larger than the sum of its proper divisors (347295).

2431009 is an equidigital number, since it uses as much as digits as its factorization.

2431009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347294.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2431009 is about 1559.1693301242. The cubic root of 2431009 is about 134.4607477946.

The spelling of 2431009 in words is "two million, four hundred thirty-one thousand, nine".