3231311020 has 48 divisors (see below), whose sum is σ = 7778272320. Its totient is φ = 1104574464.

The previous prime is 3231311011. The next prime is 3231311029. The reversal of 3231311020 is 201131323.

It is an interprime number because it is at equal distance from previous prime (3231311011) and next prime (3231311029).

It is a junction number, because it is equal to n+sod(n) for n = 3231310985 and 3231311003.

It is not an unprimeable number, because it can be changed into a prime (3231311029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12936 + ... + 81424.

It is an arithmetic number, because the mean of its divisors is an integer number (162047340).

Almost surely, 2^3231311020 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 3231311020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3889136160).

3231311020 is an abundant number, since it is smaller than the sum of its proper divisors (4546961300).

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

3231311020 is a wasteful number, since it uses less digits than its factorization.

3231311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68842 (or 68840 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3231311020 is about 56844.6217332827. The cubic root of 3231311020 is about 1478.4032907807.

Adding to 3231311020 its reverse (201131323), we get a palindrome (3432442343).

The spelling of 3231311020 in words is "three billion, two hundred thirty-one million, three hundred eleven thousand, twenty".