3231320020 has 12 divisors (see below), whose sum is σ = 6785772084. Its totient is φ = 1292528000.

The previous prime is 3231319943. The next prime is 3231320021. The reversal of 3231320020 is 200231323.

It can be written as a sum of positive squares in 2 ways, for example, as 1062368836 + 2168951184 = 32594^2 + 46572^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3231319976 and 3231320003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231320021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 80782981 + ... + 80783020.

It is an arithmetic number, because the mean of its divisors is an integer number (565481007).

Almost surely, 2^3231320020 is an apocalyptic number.

It is an amenable number.

3231320020 is an abundant number, since it is smaller than the sum of its proper divisors (3554452064).

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

3231320020 is a wasteful number, since it uses less digits than its factorization.

3231320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161566010 (or 161566008 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 3231320020 is about 56844.7008963896. The cubic root of 3231320020 is about 1478.4046633523.

Adding to 3231320020 its reverse (200231323), we get a palindrome (3431551343).

The spelling of 3231320020 in words is "three billion, two hundred thirty-one million, three hundred twenty thousand, twenty".