2321001243 has 16 divisors (see below), whose sum is σ = 3751113600. Its totient is φ = 1406667240.

The previous prime is 2321001227. The next prime is 2321001247. The reversal of 2321001243 is 3421001232.

It is not a de Polignac number, because 2321001243 - 2⁴ = 2321001227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2321001247) 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 15 ways as a sum of consecutive naturals, for example, 3907113 + ... + 3907706.

It is an arithmetic number, because the mean of its divisors is an integer number (234444600).

Almost surely, 2^2321001243 is an apocalyptic number.

2321001243 is a deficient number, since it is larger than the sum of its proper divisors (1430112357).

2321001243 is a wasteful number, since it uses less digits than its factorization.

2321001243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814839 (or 7814833 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2321001243 is about 48176.7707821934. The cubic root of 2321001243 is about 1324.0116028334.

Adding to 2321001243 its reverse (3421001232), we get a palindrome (5742002475).

The spelling of 2321001243 in words is "two billion, three hundred twenty-one million, one thousand, two hundred forty-three".