23403321 has 24 divisors (see below), whose sum is σ = 35128704. Its totient is φ = 15003360.

The previous prime is 23403313. The next prime is 23403329. The reversal of 23403321 is 12330432.

23403321 is a `hidden beast` number, since 2 + 340 + 3 + 321 = 666.

It is an interprime number because it is at equal distance from previous prime (23403313) and next prime (23403329).

It is not a de Polignac number, because 23403321 - 2³ = 23403313 is a prime.

23403321 is a modest number, since divided by 3321 gives 234 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 23403294 and 23403303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23403329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25350 + ... + 26256.

It is an arithmetic number, because the mean of its divisors is an integer number (1463696).

Almost surely, 2^23403321 is an apocalyptic number.

It is an amenable number.

23403321 is a deficient number, since it is larger than the sum of its proper divisors (11725383).

23403321 is a wasteful number, since it uses less digits than its factorization.

23403321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 1018 counting only the distinct ones).

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

The square root of 23403321 is about 4837.6979029286. The cubic root of 23403321 is about 286.0393811812.

Adding to 23403321 its reverse (12330432), we get a palindrome (35733753).

The spelling of 23403321 in words is "twenty-three million, four hundred three thousand, three hundred twenty-one".