23072143 has 4 divisors (see below), whose sum is σ = 23083480. Its totient is φ = 23060808.

The previous prime is 23072131. The next prime is 23072167. The reversal of 23072143 is 34127032.

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 23072143 - 2¹⁷ = 22941071 is a prime.

It is a super-2 number, since 2×23072143² = 1064647565224898, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23072173) 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, 1680 + ... + 6997.

It is an arithmetic number, because the mean of its divisors is an integer number (5770870).

Almost surely, 2^23072143 is an apocalyptic number.

23072143 is a deficient number, since it is larger than the sum of its proper divisors (11337).

23072143 is an equidigital number, since it uses as much as digits as its factorization.

23072143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11336.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 23072143 is about 4803.3470622057. The cubic root of 23072143 is about 284.6837283591.

Adding to 23072143 its reverse (34127032), we get a palindrome (57199175).

The spelling of 23072143 in words is "twenty-three million, seventy-two thousand, one hundred forty-three".