1320313122 has 80 divisors (see below), whose sum is σ = 3034354752. Its totient is φ = 428963040.

The previous prime is 1320313103. The next prime is 1320313123. The reversal of 1320313122 is 2213130231.

1320313122 is a `hidden beast` number, since 1 + 320 + 31 + 312 + 2 = 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 = 1320313095 and 1320313104.

It is not an unprimeable number, because it can be changed into a prime (1320313123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1117372 + ... + 1118552.

Almost surely, 2^1320313122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320313122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517177376).

1320313122 is an abundant number, since it is smaller than the sum of its proper divisors (1714041630).

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

1320313122 is a wasteful number, since it uses less digits than its factorization.

1320313122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1356 counting only the distinct ones).

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

The square root of 1320313122 is about 36336.1131933508. The cubic root of 1320313122 is about 1097.0480416894.

Adding to 1320313122 its reverse (2213130231), we get a palindrome (3533443353).

The spelling of 1320313122 in words is "one billion, three hundred twenty million, three hundred thirteen thousand, one hundred twenty-two".