3123320220 has 72 divisors (see below), whose sum is σ = 9730148064. Its totient is φ = 810373248.

The previous prime is 3123320203. The next prime is 3123320243. The reversal of 3123320220 is 220233213.

It is a happy number.

3123320220 is a `hidden beast` number, since 3 + 123 + 320 + 220 = 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 = 3123320193 and 3123320202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227824 + ... + 241143.

Almost surely, 2^3123320220 is an apocalyptic number.

3123320220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3123320220 is an abundant number, since it is smaller than the sum of its proper divisors (6606827844).

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

3123320220 is a wasteful number, since it uses less digits than its factorization.

3123320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469019 (or 469014 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 3123320220 is about 55886.6730088668. The cubic root of 3123320220 is about 1461.7468644749.

Adding to 3123320220 its reverse (220233213), we get a palindrome (3343553433).

The spelling of 3123320220 in words is "three billion, one hundred twenty-three million, three hundred twenty thousand, two hundred twenty".