2321728423 has 8 divisors (see below), whose sum is σ = 2666739200. Its totient is φ = 1980051480.

The previous prime is 2321728391. The next prime is 2321728463. The reversal of 2321728423 is 3248271232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2321728423 - 2⁵ = 2321728391 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 (2321728463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831963 + ... + 834748.

It is an arithmetic number, because the mean of its divisors is an integer number (333342400).

Almost surely, 2^2321728423 is an apocalyptic number.

2321728423 is a deficient number, since it is larger than the sum of its proper divisors (345010777).

2321728423 is a wasteful number, since it uses less digits than its factorization.

2321728423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666917.

The product of its digits is 32256, while the sum is 34.

The square root of 2321728423 is about 48184.3171893096. The cubic root of 2321728423 is about 1324.1498613010.

Adding to 2321728423 its reverse (3248271232), we get a palindrome (5569999655).

The spelling of 2321728423 in words is "two billion, three hundred twenty-one million, seven hundred twenty-eight thousand, four hundred twenty-three".