1331110311244 has 72 divisors (see below), whose sum is σ = 2759465454480. Its totient is φ = 560038114944.

The previous prime is 1331110311149. The next prime is 1331110311259. The reversal of 1331110311244 is 4421130111331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8397894 + ... + 8554930.

It is an arithmetic number, because the mean of its divisors is an integer number (38325909090).

Almost surely, 2^{1331110311244} is an apocalyptic number.

1331110311244 is a gapful number since it is divisible by the number (14) 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 1331110311244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1379732727240).

1331110311244 is an abundant number, since it is smaller than the sum of its proper divisors (1428355143236).

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

1331110311244 is a wasteful number, since it uses less digits than its factorization.

1331110311244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157847 (or 157838 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1331110311244 its reverse (4421130111331), we get a palindrome (5752240422575).

The spelling of 1331110311244 in words is "one trillion, three hundred thirty-one billion, one hundred ten million, three hundred eleven thousand, two hundred forty-four".