1111103131320 has 1536 divisors, whose sum is σ = 4797667929600. Its totient is φ = 216710774784.

The previous prime is 1111103131309. The next prime is 1111103131373. The reversal of 1111103131320 is 231313011111.

1111103131320 is a `hidden beast` number, since 1 + 111 + 103 + 131 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1111103131293 and 1111103131302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2566057824 + ... + 2566058256.

It is an arithmetic number, because the mean of its divisors is an integer number (3123481725).

Almost surely, 2^{1111103131320} is an apocalyptic number.

1111103131320 is a gapful number since it is divisible by the number (10) 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 1111103131320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398833964800).

1111103131320 is an abundant number, since it is smaller than the sum of its proper divisors (3686564798280).

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

1111103131320 is a wasteful number, since it uses less digits than its factorization.

1111103131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1111103131320 its reverse (231313011111), we get a palindrome (1342416142431).

The spelling of 1111103131320 in words is "one trillion, one hundred eleven billion, one hundred three million, one hundred thirty-one thousand, three hundred twenty".