23072503 has 4 divisors (see below), whose sum is σ = 23364640. Its totient is φ = 22780368.

The previous prime is 23072477. The next prime is 23072513. The reversal of 23072503 is 30527032.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23072503 - 2²¹ = 20975351 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23072513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145950 + ... + 146107.

It is an arithmetic number, because the mean of its divisors is an integer number (5841160).

Almost surely, 2^23072503 is an apocalyptic number.

23072503 is a deficient number, since it is larger than the sum of its proper divisors (292137).

23072503 is an equidigital number, since it uses as much as digits as its factorization.

23072503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292136.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 23072503 is about 4803.3845359288. The cubic root of 23072503 is about 284.6852090135.

Adding to 23072503 its reverse (30527032), we get a palindrome (53599535).

The spelling of 23072503 in words is "twenty-three million, seventy-two thousand, five hundred three".