3231000020 has 24 divisors (see below), whose sum is σ = 6809606664. Its totient is φ = 1287732096.

The previous prime is 3230999987. The next prime is 3231000023. The reversal of 3231000020 is 200001323.

It can be written as a sum of positive squares in 4 ways, for example, as 522213904 + 2708786116 = 22852^2 + 52046^2 .

It is a super-2 number, since 2×3231000020² = 20878722258480000800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3230999965 and 3231000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231000023) 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 7 ways as a sum of consecutive naturals, for example, 286067 + ... + 297146.

It is an arithmetic number, because the mean of its divisors is an integer number (283733611).

Almost surely, 2^3231000020 is an apocalyptic number.

It is an amenable number.

3231000020 is an abundant number, since it is smaller than the sum of its proper divisors (3578606644).

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

3231000020 is a wasteful number, since it uses less digits than its factorization.

3231000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583499 (or 583497 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 3231000020 is about 56841.8861404159. The cubic root of 3231000020 is about 1478.3558592406.

Adding to 3231000020 its reverse (200001323), we get a palindrome (3431001343).

The spelling of 3231000020 in words is "three billion, two hundred thirty-one million, twenty", and thus it is an aban number.