20321030030203 has 32 divisors (see below), whose sum is σ = 24895550085120. Its totient is φ = 16190805864960.

The previous prime is 20321030030201. The next prime is 20321030030221. The reversal of 20321030030203 is 30203003012302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20321030030203 - 2¹ = 20321030030201 is a prime.

It is a super-2 number, since 2×20321030030203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321030030201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1515250 + ... + 6552712.

It is an arithmetic number, because the mean of its divisors is an integer number (777985940160).

Almost surely, 2^{20321030030203} is an apocalyptic number.

20321030030203 is a deficient number, since it is larger than the sum of its proper divisors (4574520054917).

20321030030203 is a wasteful number, since it uses less digits than its factorization.

20321030030203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5037907.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20321030030203 its reverse (30203003012302), we get a palindrome (50524033042505).

The spelling of 20321030030203 in words is "twenty trillion, three hundred twenty-one billion, thirty million, thirty thousand, two hundred three".