23330421 has 6 divisors (see below), whose sum is σ = 33699510. Its totient is φ = 15553608.

The previous prime is 23330407. The next prime is 23330449. The reversal of 23330421 is 12403332.

It can be written as a sum of positive squares in only one way, i.e., 23328900 + 1521 = 4830^2 + 39^2 .

It is not a de Polignac number, because 23330421 - 2⁵ = 23330389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23330394 and 23330403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23330491) 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 5 ways as a sum of consecutive naturals, for example, 1296126 + ... + 1296143.

It is an arithmetic number, because the mean of its divisors is an integer number (5616585).

Almost surely, 2^23330421 is an apocalyptic number.

It is an amenable number.

23330421 is a deficient number, since it is larger than the sum of its proper divisors (10369089).

23330421 is a wasteful number, since it uses less digits than its factorization.

23330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592275 (or 2592272 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23330421 is about 4830.1574508498. The cubic root of 23330421 is about 285.7420735235.

Adding to 23330421 its reverse (12403332), we get a palindrome (35733753).

The spelling of 23330421 in words is "twenty-three million, three hundred thirty thousand, four hundred twenty-one".