20131203211 has 16 divisors (see below), whose sum is σ = 23603295744. Its totient is φ = 16813859904.

The previous prime is 20131203179. The next prime is 20131203223. The reversal of 20131203211 is 11230213102.

It is not a de Polignac number, because 20131203211 - 2⁵ = 20131203179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20131209211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194911 + ... + 279736.

It is an arithmetic number, because the mean of its divisors is an integer number (1475205984).

Almost surely, 2^20131203211 is an apocalyptic number.

20131203211 is a deficient number, since it is larger than the sum of its proper divisors (3472092533).

20131203211 is an equidigital number, since it uses as much as digits as its factorization.

20131203211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474810.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20131203211 its reverse (11230213102), we get a palindrome (31361416313).

The spelling of 20131203211 in words is "twenty billion, one hundred thirty-one million, two hundred three thousand, two hundred eleven".