3122331220 has 96 divisors (see below), whose sum is σ = 6867463680. Its totient is φ = 1191490560.

The previous prime is 3122331203. The next prime is 3122331241. The reversal of 3122331220 is 221332213.

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, 10170307 + ... + 10170613.

It is an arithmetic number, because the mean of its divisors is an integer number (71536080).

Almost surely, 2^3122331220 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 3122331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3433731840).

3122331220 is an abundant number, since it is smaller than the sum of its proper divisors (3745132460).

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

3122331220 is a wasteful number, since it uses less digits than its factorization.

3122331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

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

The square root of 3122331220 is about 55877.8240449644. The cubic root of 3122331220 is about 1461.5925607036.

Adding to 3122331220 its reverse (221332213), we get a palindrome (3343663433).

The spelling of 3122331220 in words is "three billion, one hundred twenty-two million, three hundred thirty-one thousand, two hundred twenty".