1320323120 has 40 divisors (see below), whose sum is σ = 3081472416. Its totient is φ = 526112768.

The previous prime is 1320323023. The next prime is 1320323141. The reversal of 1320323120 is 213230231.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10337 + ... + 52416.

Almost surely, 2^1320323120 is an apocalyptic number.

1320323120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320323120 is an abundant number, since it is smaller than the sum of its proper divisors (1761149296).

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

1320323120 is a wasteful number, since it uses less digits than its factorization.

1320323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63029 (or 63023 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1320323120 is about 36336.2507697203. The cubic root of 1320323120 is about 1097.0508107948.

Adding to 1320323120 its reverse (213230231), we get a palindrome (1533553351).

The spelling of 1320323120 in words is "one billion, three hundred twenty million, three hundred twenty-three thousand, one hundred twenty".