23145443 has 4 divisors (see below), whose sum is σ = 23710008. Its totient is φ = 22580880.

The previous prime is 23145433. The next prime is 23145457. The reversal of 23145443 is 34454132.

23145443 = T₁₀₄₂ + T₁₀₄₃ + ... + T₁₀₈₂.

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 23145443 - 2⁶ = 23145379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23145433) 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, 282221 + ... + 282302.

It is an arithmetic number, because the mean of its divisors is an integer number (5927502).

Almost surely, 2^23145443 is an apocalyptic number.

23145443 is a deficient number, since it is larger than the sum of its proper divisors (564565).

23145443 is an equidigital number, since it uses as much as digits as its factorization.

23145443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564564.

The product of its digits is 5760, while the sum is 26.

The square root of 23145443 is about 4810.9711077910. The cubic root of 23145443 is about 284.9848889085.

Adding to 23145443 its reverse (34454132), we get a palindrome (57599575).

The spelling of 23145443 in words is "twenty-three million, one hundred forty-five thousand, four hundred forty-three".