3231113220 has 96 divisors (see below), whose sum is σ = 10152051840. Its totient is φ = 853084800.

The previous prime is 3231113189. The next prime is 3231113261. The reversal of 3231113220 is 223111323.

3231113220 is a `hidden beast` number, since 32 + 311 + 1 + 322 + 0 = 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 = 3231113193 and 3231113202.

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, 24919 + ... + 84161.

It is an arithmetic number, because the mean of its divisors is an integer number (105750540).

Almost surely, 2^3231113220 is an apocalyptic number.

3231113220 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 3231113220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5076025920).

3231113220 is an abundant number, since it is smaller than the sum of its proper divisors (6920938620).

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

3231113220 is a wasteful number, since it uses less digits than its factorization.

3231113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59362 (or 59354 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3231113220 is about 56842.8818762737. The cubic root of 3231113220 is about 1478.3731240634.

Adding to 3231113220 its reverse (223111323), we get a palindrome (3454224543).

The spelling of 3231113220 in words is "three billion, two hundred thirty-one million, one hundred thirteen thousand, two hundred twenty".