3123132020 has 12 divisors (see below), whose sum is σ = 6558577284. Its totient is φ = 1249252800.

The previous prime is 3123131993. The next prime is 3123132029. The reversal of 3123132020 is 202313213.

It can be written as a sum of positive squares in 2 ways, for example, as 668325904 + 2454806116 = 25852^2 + 49546^2 .

It is a super-4 number, since 4×3123132020⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3123132020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123132029) 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, 78078281 + ... + 78078320.

It is an arithmetic number, because the mean of its divisors is an integer number (546548107).

Almost surely, 2^3123132020 is an apocalyptic number.

It is an amenable number.

3123132020 is an abundant number, since it is smaller than the sum of its proper divisors (3435445264).

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

3123132020 is a wasteful number, since it uses less digits than its factorization.

3123132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156156610 (or 156156608 counting only the distinct ones).

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

The square root of 3123132020 is about 55884.9892189307. The cubic root of 3123132020 is about 1461.7175040223.

Adding to 3123132020 its reverse (202313213), we get a palindrome (3325445233).

The spelling of 3123132020 in words is "three billion, one hundred twenty-three million, one hundred thirty-two thousand, twenty".