23940011 has 2 divisors, whose sum is σ = 23940012. Its totient is φ = 23940010.

The previous prime is 23939989. The next prime is 23940013. The reversal of 23940011 is 11004932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23940011 is a prime.

It is a Sophie Germain prime.

Together with 23940013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23940013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11970005 + 11970006.

It is an arithmetic number, because the mean of its divisors is an integer number (11970006).

Almost surely, 2^23940011 is an apocalyptic number.

23940011 is a deficient number, since it is larger than the sum of its proper divisors (1).

23940011 is an equidigital number, since it uses as much as digits as its factorization.

23940011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 23940011 is about 4892.8530531787. The cubic root of 23940011 is about 288.2093826843.

Adding to 23940011 its reverse (11004932), we get a palindrome (34944943).

The spelling of 23940011 in words is "twenty-three million, nine hundred forty thousand, eleven".