23172303 has 16 divisors (see below), whose sum is σ = 38520576. Its totient is φ = 12037440.

The previous prime is 23172301. The next prime is 23172319. The reversal of 23172303 is 30327132.

It is not a de Polignac number, because 23172303 - 2¹ = 23172301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 23172303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23172301) 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 15 ways as a sum of consecutive naturals, for example, 49926 + ... + 50387.

It is an arithmetic number, because the mean of its divisors is an integer number (2407536).

Almost surely, 2^23172303 is an apocalyptic number.

23172303 is a deficient number, since it is larger than the sum of its proper divisors (15348273).

23172303 is a wasteful number, since it uses less digits than its factorization.

23172303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100334.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 23172303 is about 4813.7618345739. The cubic root of 23172303 is about 285.0950867699.

Adding to 23172303 its reverse (30327132), we get a palindrome (53499435).

The spelling of 23172303 in words is "twenty-three million, one hundred seventy-two thousand, three hundred three".