23145043 has 4 divisors (see below), whose sum is σ = 23161248. Its totient is φ = 23128840.

The previous prime is 23145019. The next prime is 23145053. The reversal of 23145043 is 34054132.

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 23145043 - 2⁵ = 23145011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23145053) 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, 5728 + ... + 8893.

It is an arithmetic number, because the mean of its divisors is an integer number (5790312).

Almost surely, 2^23145043 is an apocalyptic number.

23145043 is a deficient number, since it is larger than the sum of its proper divisors (16205).

23145043 is a wasteful number, since it uses less digits than its factorization.

23145043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16204.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23145043 is about 4810.9295359629. The cubic root of 23145043 is about 284.9832471942.

Adding to 23145043 its reverse (34054132), we get a palindrome (57199175).

The spelling of 23145043 in words is "twenty-three million, one hundred forty-five thousand, forty-three".