23115503 has 2 divisors, whose sum is σ = 23115504. Its totient is φ = 23115502.

The previous prime is 23115497. The next prime is 23115509. The reversal of 23115503 is 30551132.

It is a balanced prime because it is at equal distance from previous prime (23115497) and next prime (23115509).

It is a cyclic number.

It is not a de Polignac number, because 23115503 - 2⁸ = 23115247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23115509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11557751 + 11557752.

It is an arithmetic number, because the mean of its divisors is an integer number (11557752).

Almost surely, 2^23115503 is an apocalyptic number.

23115503 is a deficient number, since it is larger than the sum of its proper divisors (1).

23115503 is an equidigital number, since it uses as much as digits as its factorization.

23115503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 23115503 is about 4807.8584629750. The cubic root of 23115503 is about 284.8619542802.

Adding to 23115503 its reverse (30551132), we get a palindrome (53666635).

The spelling of 23115503 in words is "twenty-three million, one hundred fifteen thousand, five hundred three".