3120010020 has 72 divisors (see below), whose sum is σ = 9518830776. Its totient is φ = 827185152.

The previous prime is 3120010009. The next prime is 3120010027. The reversal of 3120010020 is 200100213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1362052836 + 1757957184 = 36906^2 + 41928^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 3120009984 and 3120010011.

It is not an unprimeable number, because it can be changed into a prime (3120010027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18957 + ... + 81236.

It is an arithmetic number, because the mean of its divisors is an integer number (132205983).

Almost surely, 2^3120010020 is an apocalyptic number.

3120010020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3120010020 is an abundant number, since it is smaller than the sum of its proper divisors (6398820756).

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

3120010020 is a wasteful number, since it uses less digits than its factorization.

3120010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100381 (or 100376 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 3120010020 is about 55857.0498683917. The cubic root of 3120010020 is about 1461.2302790750.

Adding to 3120010020 its reverse (200100213), we get a palindrome (3320110233).

The spelling of 3120010020 in words is "three billion, one hundred twenty million, ten thousand, twenty".