23240140043 has 2 divisors, whose sum is σ = 23240140044. Its totient is φ = 23240140042.

The previous prime is 23240140009. The next prime is 23240140057. The reversal of 23240140043 is 34004104232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23240140043 is a prime.

It is not a weakly prime, because it can be changed into another prime (23240140943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11620070021 + 11620070022.

It is an arithmetic number, because the mean of its divisors is an integer number (11620070022).

Almost surely, 2^23240140043 is an apocalyptic number.

23240140043 is a deficient number, since it is larger than the sum of its proper divisors (1).

23240140043 is an equidigital number, since it uses as much as digits as its factorization.

23240140043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23240140043 its reverse (34004104232), we get a palindrome (57244244275).

The spelling of 23240140043 in words is "twenty-three billion, two hundred forty million, one hundred forty thousand, forty-three".