23323561 has 2 divisors, whose sum is σ = 23323562. Its totient is φ = 23323560.

The previous prime is 23323543. The next prime is 23323567. The reversal of 23323561 is 16532332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12033961 + 11289600 = 3469^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 23323561 - 2⁵ = 23323529 is a prime.

It is not a weakly prime, because it can be changed into another prime (23323567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11661780 + 11661781.

It is an arithmetic number, because the mean of its divisors is an integer number (11661781).

Almost surely, 2^23323561 is an apocalyptic number.

It is an amenable number.

23323561 is a deficient number, since it is larger than the sum of its proper divisors (1).

23323561 is an equidigital number, since it uses as much as digits as its factorization.

23323561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 23323561 is about 4829.4472768631. The cubic root of 23323561 is about 285.7140645594.

Adding to 23323561 its reverse (16532332), we get a palindrome (39855893).

The spelling of 23323561 in words is "twenty-three million, three hundred twenty-three thousand, five hundred sixty-one".