20300320123 has 4 divisors (see below), whose sum is σ = 20301107328. Its totient is φ = 20299532920.

The previous prime is 20300320111. The next prime is 20300320129. The reversal of 20300320123 is 32102300302.

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-20300320123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20300320097 and 20300320106.

It is not an unprimeable number, because it can be changed into a prime (20300320129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353563 + ... + 406948.

It is an arithmetic number, because the mean of its divisors is an integer number (5075276832).

Almost surely, 2^20300320123 is an apocalyptic number.

20300320123 is a deficient number, since it is larger than the sum of its proper divisors (787205).

20300320123 is an equidigital number, since it uses as much as digits as its factorization.

20300320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787204.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20300320123 its reverse (32102300302), we get a palindrome (52402620425).

The spelling of 20300320123 in words is "twenty billion, three hundred million, three hundred twenty thousand, one hundred twenty-three".