23143823 has 2 divisors, whose sum is σ = 23143824. Its totient is φ = 23143822.

The previous prime is 23143811. The next prime is 23143829. The reversal of 23143823 is 32834132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23143823 - 2¹⁰ = 23142799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23143792 and 23143801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23143829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571911 + 11571912.

It is an arithmetic number, because the mean of its divisors is an integer number (11571912).

Almost surely, 2^23143823 is an apocalyptic number.

23143823 is a deficient number, since it is larger than the sum of its proper divisors (1).

23143823 is an equidigital number, since it uses as much as digits as its factorization.

23143823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 23143823 is about 4810.8027396683. The cubic root of 23143823 is about 284.9782398488.

Adding to 23143823 its reverse (32834132), we get a palindrome (55977955).

The spelling of 23143823 in words is "twenty-three million, one hundred forty-three thousand, eight hundred twenty-three".