3121133020 has 48 divisors (see below), whose sum is σ = 7037731008. Its totient is φ = 1158456320.

The previous prime is 3121133009. The next prime is 3121133053. The reversal of 3121133020 is 203311213.

3121133020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3121132985 and 3121133003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40507 + ... + 88786.

It is an arithmetic number, because the mean of its divisors is an integer number (146619396).

Almost surely, 2^3121133020 is an apocalyptic number.

It is an amenable number.

3121133020 is an abundant number, since it is smaller than the sum of its proper divisors (3916597988).

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

3121133020 is a wasteful number, since it uses less digits than its factorization.

3121133020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129390 (or 129388 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3121133020 is about 55867.1014104007. The cubic root of 3121133020 is about 1461.4055738927.

Adding to 3121133020 its reverse (203311213), we get a palindrome (3324444233).

The spelling of 3121133020 in words is "three billion, one hundred twenty-one million, one hundred thirty-three thousand, twenty".