3201000020 has 12 divisors (see below), whose sum is σ = 6722100084. Its totient is φ = 1280400000.

The previous prime is 3200999993. The next prime is 3201000029. The reversal of 3201000020 is 200001023.

It can be written as a sum of positive squares in 2 ways, for example, as 992376004 + 2208624016 = 31502^2 + 46996^2 .

It is a super-2 number, since 2×3201000020² = 20492802256080000800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3200999971 and 3201000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201000029) 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 3 ways as a sum of consecutive naturals, for example, 80024981 + ... + 80025020.

It is an arithmetic number, because the mean of its divisors is an integer number (560175007).

Almost surely, 2^3201000020 is an apocalyptic number.

It is an amenable number.

3201000020 is an abundant number, since it is smaller than the sum of its proper divisors (3521100064).

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

3201000020 is a wasteful number, since it uses less digits than its factorization.

3201000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160050010 (or 160050008 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 3201000020 is about 56577.3808160116. The cubic root of 3201000020 is about 1473.7660878510.

Adding to 3201000020 its reverse (200001023), we get a palindrome (3401001043).

The spelling of 3201000020 in words is "three billion, two hundred one million, twenty", and thus it is an aban number.