20213231311204 has 12 divisors (see below), whose sum is σ = 35577623898684. Its totient is φ = 10048195911584.

The previous prime is 20213231311199. The next prime is 20213231311249. The reversal of 20213231311204 is 40211313231202.

It can be written as a sum of positive squares in 2 ways, for example, as 11091031302400 + 9122200008804 = 3330320^2 + 3020298^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14604935227 + ... + 14604936610.

It is an arithmetic number, because the mean of its divisors is an integer number (2964801991557).

Almost surely, 2^{20213231311204} is an apocalyptic number.

It is an amenable number.

20213231311204 is a deficient number, since it is larger than the sum of its proper divisors (15364392587480).

20213231311204 is a wasteful number, since it uses less digits than its factorization.

20213231311204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29209872014 (or 29209872012 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20213231311204 its reverse (40211313231202), we get a palindrome (60424544542406).

The spelling of 20213231311204 in words is "twenty trillion, two hundred thirteen billion, two hundred thirty-one million, three hundred eleven thousand, two hundred four".