2031020020 has 24 divisors (see below), whose sum is σ = 4266315144. Its totient is φ = 812184576.

The previous prime is 2031019933. The next prime is 2031020041. The reversal of 2031020020 is 200201302.

It can be written as a sum of positive squares in 4 ways, for example, as 613949284 + 1417070736 = 24778^2 + 37644^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2031019979 and 2031020006.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 74124 + ... + 97756.

It is an arithmetic number, because the mean of its divisors is an integer number (177763131).

Almost surely, 2^2031020020 is an apocalyptic number.

2031020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031020020 is an abundant number, since it is smaller than the sum of its proper divisors (2235295124).

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

2031020020 is a wasteful number, since it uses less digits than its factorization.

2031020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27939 (or 27937 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2031020020 is about 45066.8394720553. The cubic root of 2031020020 is about 1266.4014567867.

Adding to 2031020020 its reverse (200201302), we get a palindrome (2231221322).

The spelling of 2031020020 in words is "two billion, thirty-one million, twenty thousand, twenty".