20311303210 has 48 divisors (see below), whose sum is σ = 40637910600. Its totient is φ = 7302901760.

The previous prime is 20311303169. The next prime is 20311303211. The reversal of 20311303210 is 1230311302.

It can be written as a sum of positive squares in 4 ways, for example, as 15013355841 + 5297947369 = 122529^2 + 72787^2 .

It is not an unprimeable number, because it can be changed into a prime (20311303211) 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 23 ways as a sum of consecutive naturals, for example, 13386 + ... + 201994.

Almost surely, 2^20311303210 is an apocalyptic number.

20311303210 is an abundant number, since it is smaller than the sum of its proper divisors (20326607390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311303210 is a wasteful number, since it uses less digits than its factorization.

20311303210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188727 (or 188716 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20311303210 its reverse (1230311302), we get a palindrome (21541614512).

The spelling of 20311303210 in words is "twenty billion, three hundred eleven million, three hundred three thousand, two hundred ten".