20031102992 has 40 divisors (see below), whose sum is σ = 41104791000. Its totient is φ = 9423747072.

The previous prime is 20031102947. The next prime is 20031103013. The reversal of 20031102992 is 29920113002.

It can be written as a sum of positive squares in 4 ways, for example, as 7371252736 + 12659850256 = 85856^2 + 112516^2 .

It is a super-2 number, since 2×20031102992² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229234 + ... + 1245422.

It is an arithmetic number, because the mean of its divisors is an integer number (1027619775).

Almost surely, 2^20031102992 is an apocalyptic number.

It is an amenable number.

20031102992 is an abundant number, since it is smaller than the sum of its proper divisors (21073688008).

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

20031102992 is a wasteful number, since it uses less digits than its factorization.

20031102992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20763 (or 20757 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

Adding to 20031102992 its reverse (29920113002), we get a palindrome (49951215994).

The spelling of 20031102992 in words is "twenty billion, thirty-one million, one hundred two thousand, nine hundred ninety-two".