3123220123320 has 128 divisors (see below), whose sum is σ = 10222621424640. Its totient is φ = 757057328640.

The previous prime is 3123220123259. The next prime is 3123220123321. The reversal of 3123220123320 is 233210223213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123220123321) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 11757894 + ... + 12020586.

It is an arithmetic number, because the mean of its divisors is an integer number (79864229880).

Almost surely, 2^{3123220123320} is an apocalyptic number.

3123220123320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3123220123320 is an abundant number, since it is smaller than the sum of its proper divisors (7099401301320).

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

3123220123320 is a wasteful number, since it uses less digits than its factorization.

3123220123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271725 (or 271721 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 3123220123320 its reverse (233210223213), we get a palindrome (3356430346533).

The spelling of 3123220123320 in words is "three trillion, one hundred twenty-three billion, two hundred twenty million, one hundred twenty-three thousand, three hundred twenty".