1131103321320 has 128 divisors (see below), whose sum is σ = 3894295449600. Its totient is φ = 257456107776.

The previous prime is 1131103321291. The next prime is 1131103321357. The reversal of 1131103321320 is 231233011311.

It is a happy number.

It is a super-2 number, since 2×1131103321320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2616294 + ... + 3017813.

It is an arithmetic number, because the mean of its divisors is an integer number (30424183200).

Almost surely, 2^{1131103321320} is an apocalyptic number.

1131103321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131103321320 is an abundant number, since it is smaller than the sum of its proper divisors (2763192128280).

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

1131103321320 is a wasteful number, since it uses less digits than its factorization.

1131103321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634367 (or 5634363 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1131103321320 its reverse (231233011311), we get a palindrome (1362336332631).

The spelling of 1131103321320 in words is "one trillion, one hundred thirty-one billion, one hundred three million, three hundred twenty-one thousand, three hundred twenty".