23523143 has 4 divisors (see below), whose sum is σ = 26883600. Its totient is φ = 20162688.

The previous prime is 23523139. The next prime is 23523151. The reversal of 23523143 is 34132532.

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

It is not a de Polignac number, because 23523143 - 2² = 23523139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23523103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680218 + ... + 1680231.

It is an arithmetic number, because the mean of its divisors is an integer number (6720900).

Almost surely, 2^23523143 is an apocalyptic number.

23523143 is a deficient number, since it is larger than the sum of its proper divisors (3360457).

23523143 is an equidigital number, since it uses as much as digits as its factorization.

23523143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360456.

The product of its digits is 2160, while the sum is 23.

The square root of 23523143 is about 4850.0662882068. The cubic root of 23523143 is about 286.5267120752.

Adding to 23523143 its reverse (34132532), we get a palindrome (57655675).

The spelling of 23523143 in words is "twenty-three million, five hundred twenty-three thousand, one hundred forty-three".