3231302220 has 144 divisors (see below), whose sum is σ = 10229506560. Its totient is φ = 856184256.

The previous prime is 3231302201. The next prime is 3231302233. The reversal of 3231302220 is 222031323.

It is a happy number.

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 = 3231302193 and 3231302202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 790141 + ... + 794219.

It is an arithmetic number, because the mean of its divisors is an integer number (71038240).

Almost surely, 2^3231302220 is an apocalyptic number.

3231302220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3231302220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5114753280).

3231302220 is an abundant number, since it is smaller than the sum of its proper divisors (6998204340).

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

3231302220 is a wasteful number, since it uses less digits than its factorization.

3231302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4252 counting only the distinct ones).

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

The square root of 3231302220 is about 56844.5443292494. The cubic root of 3231302220 is about 1478.4019487082.

Adding to 3231302220 its reverse (222031323), we get a palindrome (3453333543).

The spelling of 3231302220 in words is "three billion, two hundred thirty-one million, three hundred two thousand, two hundred twenty".