3123132220 has 96 divisors (see below), whose sum is σ = 7872379200. Its totient is φ = 1028173824.

The previous prime is 3123132193. The next prime is 3123132241. The reversal of 3123132220 is 222313213.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

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, 65386 + ... + 102574.

It is an arithmetic number, because the mean of its divisors is an integer number (82003950).

Almost surely, 2^3123132220 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 3123132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3936189600).

3123132220 is an abundant number, since it is smaller than the sum of its proper divisors (4749246980).

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

3123132220 is a wasteful number, since it uses less digits than its factorization.

3123132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37247 (or 37245 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 3123132220 is about 55884.9910083199. The cubic root of 3123132220 is about 1461.7175352243.

Adding to 3123132220 its reverse (222313213), we get a palindrome (3345445433).

The spelling of 3123132220 in words is "three billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred twenty".