1320342320 has 60 divisors (see below), whose sum is σ = 3374263200. Its totient is φ = 480120960.

The previous prime is 1320342293. The next prime is 1320342343. The reversal of 1320342320 is 232430231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1320342292 and 1320342301.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58520 + ... + 77879.

It is an arithmetic number, because the mean of its divisors is an integer number (56237720).

Almost surely, 2^1320342320 is an apocalyptic number.

1320342320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320342320 is an abundant number, since it is smaller than the sum of its proper divisors (2053920880).

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

1320342320 is a wasteful number, since it uses less digits than its factorization.

1320342320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136434 (or 136417 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1320342320 is about 36336.5149677291. The cubic root of 1320342320 is about 1097.0561285016.

Adding to 1320342320 its reverse (232430231), we get a palindrome (1552772551).

The spelling of 1320342320 in words is "one billion, three hundred twenty million, three hundred forty-two thousand, three hundred twenty".