1320310020 has 24 divisors (see below), whose sum is σ = 3696868224. Its totient is φ = 352082656.

The previous prime is 1320310007. The next prime is 1320310027. The reversal of 1320310020 is 200130231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1320309978 and 1320310005.

It is not an unprimeable number, because it can be changed into a prime (1320310027) 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 7 ways as a sum of consecutive naturals, for example, 11002524 + ... + 11002643.

It is an arithmetic number, because the mean of its divisors is an integer number (154036176).

Almost surely, 2^1320310020 is an apocalyptic number.

1320310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320310020 is an abundant number, since it is smaller than the sum of its proper divisors (2376558204).

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

1320310020 is a wasteful number, since it uses less digits than its factorization.

1320310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22005179 (or 22005177 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1320310020 is about 36336.0705085181. The cubic root of 1320310020 is about 1097.0471825382.

Adding to 1320310020 its reverse (200130231), we get a palindrome (1520440251).

The spelling of 1320310020 in words is "one billion, three hundred twenty million, three hundred ten thousand, twenty".