3121332020 has 24 divisors (see below), whose sum is σ = 6555981768. Its totient is φ = 1248307200.

The previous prime is 3121332017. The next prime is 3121332079. The reversal of 3121332020 is 202331213.

It can be written as a sum of positive squares in 4 ways, for example, as 98596 + 3121233424 = 314^2 + 55868^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3121332020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140900 + ... + 161540.

It is an arithmetic number, because the mean of its divisors is an integer number (273165907).

Almost surely, 2^3121332020 is an apocalyptic number.

It is an amenable number.

3121332020 is an abundant number, since it is smaller than the sum of its proper divisors (3434649748).

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

3121332020 is a wasteful number, since it uses less digits than its factorization.

3121332020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28211 (or 28209 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3121332020 is about 55868.8823944063. The cubic root of 3121332020 is about 1461.4366324353.

Adding to 3121332020 its reverse (202331213), we get a palindrome (3323663233).

The spelling of 3121332020 in words is "three billion, one hundred twenty-one million, three hundred thirty-two thousand, twenty".