3121342020 has 96 divisors (see below), whose sum is σ = 9719001600. Its totient is φ = 831658752.

The previous prime is 3121342009. The next prime is 3121342033. The reversal of 3121342020 is 202431213.

3121342020 is a `hidden beast` number, since 31 + 213 + 420 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3121341984 and 3121342002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1126677 + ... + 1129443.

It is an arithmetic number, because the mean of its divisors is an integer number (101239600).

Almost surely, 2^3121342020 is an apocalyptic number.

3121342020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121342020 is an abundant number, since it is smaller than the sum of its proper divisors (6597659580).

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

3121342020 is a wasteful number, since it uses less digits than its factorization.

3121342020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874 (or 4866 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3121342020 is about 55868.9718895918. The cubic root of 3121342020 is about 1461.4381931312.

Adding to 3121342020 its reverse (202431213), we get a palindrome (3323773233).

The spelling of 3121342020 in words is "three billion, one hundred twenty-one million, three hundred forty-two thousand, twenty".