3123220131020 has 144 divisors (see below), whose sum is σ = 7239456000000. Its totient is φ = 1130963433600.

The previous prime is 3123220130999. The next prime is 3123220131121. The reversal of 3123220131020 is 201310223213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3123220130983 and 3123220131001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 624766481 + ... + 624771479.

It is an arithmetic number, because the mean of its divisors is an integer number (50274000000).

Almost surely, 2^{3123220131020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3123220131020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3619728000000).

3123220131020 is an abundant number, since it is smaller than the sum of its proper divisors (4116235868980).

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

3123220131020 is a wasteful number, since it uses less digits than its factorization.

3123220131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060 (or 6047 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 3123220131020 its reverse (201310223213), we get a palindrome (3324530354233).

The spelling of 3123220131020 in words is "three trillion, one hundred twenty-three billion, two hundred twenty million, one hundred thirty-one thousand, twenty".