23531603 has 2 divisors, whose sum is σ = 23531604. Its totient is φ = 23531602.

The previous prime is 23531591. The next prime is 23531611. The reversal of 23531603 is 30613532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23531603 - 2¹⁰ = 23530579 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23531693) 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, 11765801 + 11765802.

It is an arithmetic number, because the mean of its divisors is an integer number (11765802).

Almost surely, 2^23531603 is an apocalyptic number.

23531603 is a deficient number, since it is larger than the sum of its proper divisors (1).

23531603 is an equidigital number, since it uses as much as digits as its factorization.

23531603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 23531603 is about 4850.9383628325. The cubic root of 23531603 is about 286.5610573360.

The spelling of 23531603 in words is "twenty-three million, five hundred thirty-one thousand, six hundred three".