23304032421 has 4 divisors (see below), whose sum is σ = 31072043232. Its totient is φ = 15536021612.

The previous prime is 23304032413. The next prime is 23304032443. The reversal of 23304032421 is 12423040332.

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 23304032421 - 2³ = 23304032413 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23304032391 and 23304032400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23304032221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3884005401 + ... + 3884005406.

It is an arithmetic number, because the mean of its divisors is an integer number (7768010808).

Almost surely, 2^23304032421 is an apocalyptic number.

It is an amenable number.

23304032421 is a deficient number, since it is larger than the sum of its proper divisors (7768010811).

23304032421 is an equidigital number, since it uses as much as digits as its factorization.

23304032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7768010810.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 23304032421 its reverse (12423040332), we get a palindrome (35727072753).

The spelling of 23304032421 in words is "twenty-three billion, three hundred four million, thirty-two thousand, four hundred twenty-one".