23383561 has 2 divisors, whose sum is σ = 23383562. Its totient is φ = 23383560.

The previous prime is 23383559. The next prime is 23383567. The reversal of 23383561 is 16538332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13366336 + 10017225 = 3656^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 23383561 - 2¹ = 23383559 is a prime.

Together with 23383559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23383567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11691780 + 11691781.

It is an arithmetic number, because the mean of its divisors is an integer number (11691781).

Almost surely, 2^23383561 is an apocalyptic number.

It is an amenable number.

23383561 is a deficient number, since it is larger than the sum of its proper divisors (1).

23383561 is an equidigital number, since it uses as much as digits as its factorization.

23383561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 23383561 is about 4835.6551779464. The cubic root of 23383561 is about 285.9588551501.

The spelling of 23383561 in words is "twenty-three million, three hundred eighty-three thousand, five hundred sixty-one".