1131322231320 has 128 divisors (see below), whose sum is σ = 3405364588800. Its totient is φ = 300673949184.

The previous prime is 1131322231309. The next prime is 1131322231357. The reversal of 1131322231320 is 231322231311.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 69257874 + ... + 69274206.

It is an arithmetic number, because the mean of its divisors is an integer number (26604410850).

Almost surely, 2^{1131322231320} is an apocalyptic number.

1131322231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131322231320 is an abundant number, since it is smaller than the sum of its proper divisors (2274042357480).

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

1131322231320 is a wasteful number, since it uses less digits than its factorization.

1131322231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18249 (or 18245 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1131322231320 its reverse (231322231311), we get a palindrome (1362644462631).

Subtracting from 1131322231320 its reverse (231322231311), we obtain a palindrome (900000000009).

The spelling of 1131322231320 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-two million, two hundred thirty-one thousand, three hundred twenty".