20430333123 has 4 divisors (see below), whose sum is σ = 27240444168. Its totient is φ = 13620222080.

The previous prime is 20430333109. The next prime is 20430333137. The reversal of 20430333123 is 32133303402.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20430333109) and next prime (20430333137).

It is a cyclic number.

It is not a de Polignac number, because 20430333123 - 2⁶ = 20430333059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20430333093 and 20430333102.

It is not an unprimeable number, because it can be changed into a prime (20430333223) 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, 3405055518 + ... + 3405055523.

It is an arithmetic number, because the mean of its divisors is an integer number (6810111042).

Almost surely, 2^20430333123 is an apocalyptic number.

20430333123 is a deficient number, since it is larger than the sum of its proper divisors (6810111045).

20430333123 is an equidigital number, since it uses as much as digits as its factorization.

20430333123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6810111044.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 20430333123 its reverse (32133303402), we get a palindrome (52563636525).

The spelling of 20430333123 in words is "twenty billion, four hundred thirty million, three hundred thirty-three thousand, one hundred twenty-three".