2321440023 has 12 divisors (see below), whose sum is σ = 3600601080. Its totient is φ = 1326537072.

The previous prime is 2321440013. The next prime is 2321440057. The reversal of 2321440023 is 3200441232.

It is not a de Polignac number, because 2321440023 - 2⁶ = 2321439959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321440003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7895908 + ... + 7896201.

It is an arithmetic number, because the mean of its divisors is an integer number (300050090).

Almost surely, 2^2321440023 is an apocalyptic number.

2321440023 is a deficient number, since it is larger than the sum of its proper divisors (1279161057).

2321440023 is a wasteful number, since it uses less digits than its factorization.

2321440023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15792126 (or 15792119 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2321440023 is about 48181.3244213980. The cubic root of 2321440023 is about 1324.0950313692.

Adding to 2321440023 its reverse (3200441232), we get a palindrome (5521881255).

The spelling of 2321440023 in words is "two billion, three hundred twenty-one million, four hundred forty thousand, twenty-three".