23440240123 has 2 divisors, whose sum is σ = 23440240124. Its totient is φ = 23440240122.

The previous prime is 23440240099. The next prime is 23440240133. The reversal of 23440240123 is 32104204432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23440240123 - 2⁹ = 23440239611 is a prime.

It is not a weakly prime, because it can be changed into another prime (23440240133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11720120061 + 11720120062.

It is an arithmetic number, because the mean of its divisors is an integer number (11720120062).

Almost surely, 2^23440240123 is an apocalyptic number.

23440240123 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440240123 is an equidigital number, since it uses as much as digits as its factorization.

23440240123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 23440240123 its reverse (32104204432), we get a palindrome (55544444555).

The spelling of 23440240123 in words is "twenty-three billion, four hundred forty million, two hundred forty thousand, one hundred twenty-three".