23261143 has 4 divisors (see below), whose sum is σ = 23334840. Its totient is φ = 23187448.

The previous prime is 23261137. The next prime is 23261159. The reversal of 23261143 is 34116232.

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

It is a cyclic number.

It is not a de Polignac number, because 23261143 - 2⁹ = 23260631 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 (23261113) 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, 36373 + ... + 37006.

It is an arithmetic number, because the mean of its divisors is an integer number (5833710).

Almost surely, 2^23261143 is an apocalyptic number.

23261143 is a deficient number, since it is larger than the sum of its proper divisors (73697).

23261143 is an equidigital number, since it uses as much as digits as its factorization.

23261143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73696.

The product of its digits is 864, while the sum is 22.

The square root of 23261143 is about 4822.9807173573. The cubic root of 23261143 is about 285.4589629635.

Adding to 23261143 its reverse (34116232), we get a palindrome (57377375).

The spelling of 23261143 in words is "twenty-three million, two hundred sixty-one thousand, one hundred forty-three".