3231220102440 has 256 divisors, whose sum is σ = 10713619768320. Its totient is φ = 773070704640.

The previous prime is 3231220102421. The next prime is 3231220102457. The reversal of 3231220102440 is 442010221323.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3231220102440.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107025027 + ... + 107055213.

It is an arithmetic number, because the mean of its divisors is an integer number (41850077220).

Almost surely, 2^{3231220102440} is an apocalyptic number.

3231220102440 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 3231220102440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5356809884160).

3231220102440 is an abundant number, since it is smaller than the sum of its proper divisors (7482399665880).

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

3231220102440 is a wasteful number, since it uses less digits than its factorization.

3231220102440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31272 (or 31268 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 3231220102440 its reverse (442010221323), we get a palindrome (3673230323763).

The spelling of 3231220102440 in words is "three trillion, two hundred thirty-one billion, two hundred twenty million, one hundred two thousand, four hundred forty".