30203120023 has 4 divisors (see below), whose sum is σ = 31979774160. Its totient is φ = 28426465888.

The previous prime is 30203120021. The next prime is 30203120027. The reversal of 30203120023 is 32002130203.

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 30203120023 - 2¹ = 30203120021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30203119979 and 30203120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30203120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888327043 + ... + 888327076.

It is an arithmetic number, because the mean of its divisors is an integer number (7994943540).

Almost surely, 2^30203120023 is an apocalyptic number.

30203120023 is a deficient number, since it is larger than the sum of its proper divisors (1776654137).

30203120023 is a wasteful number, since it uses less digits than its factorization.

30203120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776654136.

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

Adding to 30203120023 its reverse (32002130203), we get a palindrome (62205250226).

The spelling of 30203120023 in words is "thirty billion, two hundred three million, one hundred twenty thousand, twenty-three".