20303231211 has 12 divisors (see below), whose sum is σ = 29334614400. Its totient is φ = 13531922160.

The previous prime is 20303231203. The next prime is 20303231227. The reversal of 20303231211 is 11213230302.

It is not a de Polignac number, because 20303231211 - 2³ = 20303231203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20303231411) 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 11 ways as a sum of consecutive naturals, for example, 260811 + ... + 329588.

It is an arithmetic number, because the mean of its divisors is an integer number (2444551200).

Almost surely, 2^20303231211 is an apocalyptic number.

20303231211 is a deficient number, since it is larger than the sum of its proper divisors (9031383189).

20303231211 is a wasteful number, since it uses less digits than its factorization.

20303231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594226 (or 594223 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20303231211 its reverse (11213230302), we get a palindrome (31516461513).

Subtracting from 20303231211 its reverse (11213230302), we obtain a palindrome (9090000909).

The spelling of 20303231211 in words is "twenty billion, three hundred three million, two hundred thirty-one thousand, two hundred eleven".