1320031111110 has 32 divisors (see below), whose sum is σ = 3168129512160. Its totient is φ = 352002202368.

The previous prime is 1320031111097. The next prime is 1320031111111. The reversal of 1320031111110 is 111111300231.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1320031111110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320031111111) 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, 1539684 + ... + 2238456.

It is an arithmetic number, because the mean of its divisors is an integer number (99004047255).

Almost surely, 2^{1320031111110} is an apocalyptic number.

1320031111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320031111110 is an abundant number, since it is smaller than the sum of its proper divisors (1848098401050).

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

1320031111110 is a wasteful number, since it uses less digits than its factorization.

1320031111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761752.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1320031111110 its reverse (111111300231), we get a palindrome (1431142411341).

The spelling of 1320031111110 in words is "one trillion, three hundred twenty billion, thirty-one million, one hundred eleven thousand, one hundred ten".