20300023123 has 16 divisors (see below), whose sum is σ = 21691296000. Its totient is φ = 18951809184.

The previous prime is 20300023103. The next prime is 20300023129. The reversal of 20300023123 is 32132000302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300023123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20300023097 and 20300023106.

It is not an unprimeable number, because it can be changed into a prime (20300023129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475665 + ... + 1489357.

It is an arithmetic number, because the mean of its divisors is an integer number (1355706000).

Almost surely, 2^20300023123 is an apocalyptic number.

20300023123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20300023123 is a deficient number, since it is larger than the sum of its proper divisors (1391272877).

20300023123 is a wasteful number, since it uses less digits than its factorization.

20300023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15258.

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

Adding to 20300023123 its reverse (32132000302), we get a palindrome (52432023425).

The spelling of 20300023123 in words is "twenty billion, three hundred million, twenty-three thousand, one hundred twenty-three".