20301203123 has 16 divisors (see below), whose sum is σ = 22244220000. Its totient is φ = 18441841152.

The previous prime is 20301203113. The next prime is 20301203159. The reversal of 20301203123 is 32130210302.

It is a cyclic number.

It is not a de Polignac number, because 20301203123 - 2⁴ = 20301203107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20301203113) 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, 2035553 + ... + 2045501.

It is an arithmetic number, because the mean of its divisors is an integer number (1390263750).

Almost surely, 2^20301203123 is an apocalyptic number.

20301203123 is a deficient number, since it is larger than the sum of its proper divisors (1943016877).

20301203123 is a wasteful number, since it uses less digits than its factorization.

20301203123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14134.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20301203123 its reverse (32130210302), we get a palindrome (52431413425).

The spelling of 20301203123 in words is "twenty billion, three hundred one million, two hundred three thousand, one hundred twenty-three".