20304054123 has 4 divisors (see below), whose sum is σ = 27072072168. Its totient is φ = 13536036080.

The previous prime is 20304054101. The next prime is 20304054131. The reversal of 20304054123 is 32145040302.

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

It is a cyclic number.

It is not a de Polignac number, because 20304054123 - 2⁸ = 20304053867 is a prime.

It is a super-2 number, since 2×20304054123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20304054093 and 20304054102.

It is not an unprimeable number, because it can be changed into a prime (20304054143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3384009018 + ... + 3384009023.

It is an arithmetic number, because the mean of its divisors is an integer number (6768018042).

Almost surely, 2^20304054123 is an apocalyptic number.

20304054123 is a deficient number, since it is larger than the sum of its proper divisors (6768018045).

20304054123 is an equidigital number, since it uses as much as digits as its factorization.

20304054123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6768018044.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20304054123 its reverse (32145040302), we get a palindrome (52449094425).

The spelling of 20304054123 in words is "twenty billion, three hundred four million, fifty-four thousand, one hundred twenty-three".