2340431321 has 4 divisors (see below), whose sum is σ = 2346327012. Its totient is φ = 2334535632.

The previous prime is 2340431237. The next prime is 2340431329. The reversal of 2340431321 is 1231340432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1669621321 + 670810000 = 40861^2 + 25900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2340431321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2340431329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2947250 + ... + 2948043.

It is an arithmetic number, because the mean of its divisors is an integer number (586581753).

Almost surely, 2^2340431321 is an apocalyptic number.

It is an amenable number.

2340431321 is a deficient number, since it is larger than the sum of its proper divisors (5895691).

2340431321 is an equidigital number, since it uses as much as digits as its factorization.

2340431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5895690.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2340431321 is about 48378.0045165156. The cubic root of 2340431321 is about 1327.6959601861.

Adding to 2340431321 its reverse (1231340432), we get a palindrome (3571771753).

The spelling of 2340431321 in words is "two billion, three hundred forty million, four hundred thirty-one thousand, three hundred twenty-one".