3111231220000 has 120 divisors (see below), whose sum is σ = 7696864652400. Its totient is φ = 1237538592000.

The previous prime is 3111231219983. The next prime is 3111231220063. The reversal of 3111231220000 is 221321113.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3145471 + ... + 4014529.

It is an arithmetic number, because the mean of its divisors is an integer number (64140538770).

Almost surely, 2^{3111231220000} 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 3111231220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3848432326200).

3111231220000 is an abundant number, since it is smaller than the sum of its proper divisors (4585633432400).

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

3111231220000 is an equidigital number, since it uses as much as digits as its factorization.

3111231220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869268 (or 869245 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 3111231220000 its reverse (221321113), we get a palindrome (3111452541113).

The spelling of 3111231220000 in words is "three trillion, one hundred eleven billion, two hundred thirty-one million, two hundred twenty thousand".