23145303 has 4 divisors (see below), whose sum is σ = 30860408. Its totient is φ = 15430200.

The previous prime is 23145299. The next prime is 23145323. The reversal of 23145303 is 30354132.

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

It is not a de Polignac number, because 23145303 - 2² = 23145299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23145303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145323) 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, 3857548 + ... + 3857553.

It is an arithmetic number, because the mean of its divisors is an integer number (7715102).

Almost surely, 2^23145303 is an apocalyptic number.

23145303 is a deficient number, since it is larger than the sum of its proper divisors (7715105).

23145303 is an equidigital number, since it uses as much as digits as its factorization.

23145303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715104.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 23145303 is about 4810.9565576920. The cubic root of 23145303 is about 284.9843143106.

Adding to 23145303 its reverse (30354132), we get a palindrome (53499435).

The spelling of 23145303 in words is "twenty-three million, one hundred forty-five thousand, three hundred three".