23343021 has 24 divisors (see below), whose sum is σ = 36612576. Its totient is φ = 14245920.

The previous prime is 23343011. The next prime is 23343049. The reversal of 23343021 is 12034332.

23343021 is a `hidden beast` number, since 233 + 430 + 2 + 1 = 666.

It is not a de Polignac number, because 23343021 - 2⁹ = 23342509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23342985 and 23343003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23343011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14566 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (1525524).

Almost surely, 2^23343021 is an apocalyptic number.

It is an amenable number.

23343021 is a deficient number, since it is larger than the sum of its proper divisors (13269555).

23343021 is a wasteful number, since it uses less digits than its factorization.

23343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673 (or 1670 counting only the distinct ones).

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

The square root of 23343021 is about 4831.4615801018. The cubic root of 23343021 is about 285.7935042596.

Adding to 23343021 its reverse (12034332), we get a palindrome (35377353).

The spelling of 23343021 in words is "twenty-three million, three hundred forty-three thousand, twenty-one".