1320131322 has 24 divisors (see below), whose sum is σ = 2984645664. Its totient is φ = 420911304.

The previous prime is 1320131321. The next prime is 1320131357. The reversal of 1320131322 is 2231310231.

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 = 1320131295 and 1320131304.

It is not an unprimeable number, because it can be changed into a prime (1320131321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1593948 + ... + 1594775.

It is an arithmetic number, because the mean of its divisors is an integer number (124360236).

Almost surely, 2^1320131322 is an apocalyptic number.

1320131322 is an abundant number, since it is smaller than the sum of its proper divisors (1664514342).

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

1320131322 is a wasteful number, since it uses less digits than its factorization.

1320131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188754 (or 3188751 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1320131322 is about 36333.6114637673. The cubic root of 1320131322 is about 1096.9976868442.

Adding to 1320131322 its reverse (2231310231), we get a palindrome (3551441553).

The spelling of 1320131322 in words is "one billion, three hundred twenty million, one hundred thirty-one thousand, three hundred twenty-two".