23605321 has 2 divisors, whose sum is σ = 23605322. Its totient is φ = 23605320.

The previous prime is 23605319. The next prime is 23605339. The reversal of 23605321 is 12350632.

23605321 = 3435² + 3436².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11806096 + 11799225 = 3436^2 + 3435^2 .

It is a cyclic number.

It is not a de Polignac number, because 23605321 - 2¹ = 23605319 is a prime.

It is a super-2 number, since 2×23605321² = 1114422359026082, which contains 22 as substring.

Together with 23605319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23605292 and 23605301.

It is not a weakly prime, because it can be changed into another prime (23605301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11802660 + 11802661.

It is an arithmetic number, because the mean of its divisors is an integer number (11802661).

Almost surely, 2^23605321 is an apocalyptic number.

23605321 is the 3436-th centered square number.

It is an amenable number.

23605321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23605321 is an equidigital number, since it uses as much as digits as its factorization.

23605321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 23605321 is about 4858.5307449887. The cubic root of 23605321 is about 286.8599842309.

Adding to 23605321 its reverse (12350632), we get a palindrome (35955953).

The spelling of 23605321 in words is "twenty-three million, six hundred five thousand, three hundred twenty-one".