23081503 has 4 divisors (see below), whose sum is σ = 23099688. Its totient is φ = 23063320.

The previous prime is 23081491. The next prime is 23081519. The reversal of 23081503 is 30518032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23081503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23081543) 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 in 3 ways as a sum of consecutive naturals, for example, 7033 + ... + 9778.

It is an arithmetic number, because the mean of its divisors is an integer number (5774922).

Almost surely, 2^23081503 is an apocalyptic number.

23081503 is a deficient number, since it is larger than the sum of its proper divisors (18185).

23081503 is a wasteful number, since it uses less digits than its factorization.

23081503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18184.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 23081503 is about 4804.3212840109. The cubic root of 23081503 is about 284.7222203687.

Adding to 23081503 its reverse (30518032), we get a palindrome (53599535).

Subtracting 23081503 from its reverse (30518032), we obtain a square (7436529 = 2727²).

The spelling of 23081503 in words is "twenty-three million, eighty-one thousand, five hundred three".