20312011304 has 24 divisors (see below), whose sum is σ = 41239996110. Its totient is φ = 9374773824.

The previous prime is 20312011303. The next prime is 20312011309. The reversal of 20312011304 is 40311021302.

It can be written as a sum of positive squares in 3 ways, for example, as 12265562500 + 8046448804 = 110750^2 + 89702^2 .

It is not an unprimeable number, because it can be changed into a prime (20312011303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7510487 + ... + 7513190.

Almost surely, 2^20312011304 is an apocalyptic number.

It is an amenable number.

20312011304 is an abundant number, since it is smaller than the sum of its proper divisors (20927984806).

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

20312011304 is a wasteful number, since it uses less digits than its factorization.

20312011304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15023709 (or 15023692 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20312011304 its reverse (40311021302), we get a palindrome (60623032606).

The spelling of 20312011304 in words is "twenty billion, three hundred twelve million, eleven thousand, three hundred four".