2220311232 has 84 divisors (see below), whose sum is σ = 6372992080. Its totient is φ = 739072512.

The previous prime is 2220311209. The next prime is 2220311273. The reversal of 2220311232 is 2321130222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489069 + ... + 493587.

Almost surely, 2^2220311232 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 2220311232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3186496040).

2220311232 is an abundant number, since it is smaller than the sum of its proper divisors (4152680848).

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

2220311232 is a wasteful number, since it uses less digits than its factorization.

2220311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5390 (or 5377 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2220311232 is about 47120.1786074713. The cubic root of 2220311232 is about 1304.5817094244.

Adding to 2220311232 its reverse (2321130222), we get a palindrome (4541441454).

The spelling of 2220311232 in words is "two billion, two hundred twenty million, three hundred eleven thousand, two hundred thirty-two".