23145229 has 4 divisors (see below), whose sum is σ = 23174176. Its totient is φ = 23116284.

The previous prime is 23145209. The next prime is 23145271. The reversal of 23145229 is 92254132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23145229 - 2¹¹ = 23143181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23145197 and 23145206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145209) 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, 13239 + ... + 14884.

It is an arithmetic number, because the mean of its divisors is an integer number (5793544).

Almost surely, 2^23145229 is an apocalyptic number.

It is an amenable number.

23145229 is a deficient number, since it is larger than the sum of its proper divisors (28947).

23145229 is an equidigital number, since it uses as much as digits as its factorization.

23145229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28946.

The product of its digits is 4320, while the sum is 28.

The square root of 23145229 is about 4810.9488669076. The cubic root of 23145229 is about 284.9840105937.

The spelling of 23145229 in words is "twenty-three million, one hundred forty-five thousand, two hundred twenty-nine".