23313503 has 4 divisors (see below), whose sum is σ = 23323728. Its totient is φ = 23303280.

The previous prime is 23313491. The next prime is 23313509. The reversal of 23313503 is 30531332.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23313503 - 2⁴ = 23313487 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 (23313509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 6828.

It is an arithmetic number, because the mean of its divisors is an integer number (5830932).

Almost surely, 2^23313503 is an apocalyptic number.

23313503 is a deficient number, since it is larger than the sum of its proper divisors (10225).

23313503 is an equidigital number, since it uses as much as digits as its factorization.

23313503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 23313503 is about 4828.4058445827. The cubic root of 23313503 is about 285.6729884240.

Adding to 23313503 its reverse (30531332), we get a palindrome (53844835).

The spelling of 23313503 in words is "twenty-three million, three hundred thirteen thousand, five hundred three".