23457143 has 4 divisors (see below), whose sum is σ = 24266040. Its totient is φ = 22648248.

The previous prime is 23457121. The next prime is 23457179. The reversal of 23457143 is 34175432.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23457143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 808867 = 23457143 / (2 + 3 + 4 + 5 + 7 + 1 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23457103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404405 + ... + 404462.

It is an arithmetic number, because the mean of its divisors is an integer number (6066510).

Almost surely, 2^23457143 is an apocalyptic number.

23457143 is a deficient number, since it is larger than the sum of its proper divisors (808897).

23457143 is an equidigital number, since it uses as much as digits as its factorization.

23457143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808896.

The product of its digits is 10080, while the sum is 29.

The square root of 23457143 is about 4843.2574781855. The cubic root of 23457143 is about 286.2584871914.

The spelling of 23457143 in words is "twenty-three million, four hundred fifty-seven thousand, one hundred forty-three".