2423109991 has 2 divisors, whose sum is σ = 2423109992. Its totient is φ = 2423109990.

The previous prime is 2423109989. The next prime is 2423110031. The reversal of 2423109991 is 1999013242.

It is an a-pointer prime, because the next prime (2423110031) can be obtained adding 2423109991 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2423109991 - 2¹ = 2423109989 is a prime.

Together with 2423109989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2423109971) 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 as a sum of consecutive naturals, namely, 1211554995 + 1211554996.

It is an arithmetic number, because the mean of its divisors is an integer number (1211554996).

Almost surely, 2^2423109991 is an apocalyptic number.

2423109991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2423109991 is an equidigital number, since it uses as much as digits as its factorization.

2423109991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 2423109991 is about 49225.0951344942. The cubic root of 2423109991 is about 1343.1495660312.

The spelling of 2423109991 in words is "two billion, four hundred twenty-three million, one hundred nine thousand, nine hundred ninety-one".