20001242323 has 4 divisors (see below), whose sum is σ = 20003357880. Its totient is φ = 19999126768.

The previous prime is 20001242299. The next prime is 20001242363. The reversal of 20001242323 is 32324210002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001242323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001242323.

It is not an unprimeable number, because it can be changed into a prime (20001242363) 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, 1043533 + ... + 1062526.

It is an arithmetic number, because the mean of its divisors is an integer number (5000839470).

Almost surely, 2^20001242323 is an apocalyptic number.

20001242323 is a deficient number, since it is larger than the sum of its proper divisors (2115557).

20001242323 is an equidigital number, since it uses as much as digits as its factorization.

20001242323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115556.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20001242323 its reverse (32324210002), we get a palindrome (52325452325).

The spelling of 20001242323 in words is "twenty billion, one million, two hundred forty-two thousand, three hundred twenty-three".