23730143 has 4 divisors (see below), whose sum is σ = 23739888. Its totient is φ = 23720400.

The previous prime is 23730137. The next prime is 23730151. The reversal of 23730143 is 34103732.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23730143 - 2¹⁶ = 23664607 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 (23730163) 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, 2318 + ... + 7268.

It is an arithmetic number, because the mean of its divisors is an integer number (5934972).

Almost surely, 2^23730143 is an apocalyptic number.

23730143 is a deficient number, since it is larger than the sum of its proper divisors (9745).

23730143 is an equidigital number, since it uses as much as digits as its factorization.

23730143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9744.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 23730143 is about 4871.3594611771. The cubic root of 23730143 is about 287.3647222429.

Adding to 23730143 its reverse (34103732), we get a palindrome (57833875).

The spelling of 23730143 in words is "twenty-three million, seven hundred thirty thousand, one hundred forty-three".