1323320871 has 4 divisors (see below), whose sum is σ = 1764427832. Its totient is φ = 882213912.

The previous prime is 1323320857. The next prime is 1323320891. The reversal of 1323320871 is 1780233231.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1323320871 - 2⁶ = 1323320807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323320891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220553476 + ... + 220553481.

It is an arithmetic number, because the mean of its divisors is an integer number (441106958).

Almost surely, 2^1323320871 is an apocalyptic number.

1323320871 is a deficient number, since it is larger than the sum of its proper divisors (441106961).

1323320871 is an equidigital number, since it uses as much as digits as its factorization.

1323320871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441106960.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1323320871 is about 36377.4775238746. The cubic root of 1323320871 is about 1097.8804560281.

The spelling of 1323320871 in words is "one billion, three hundred twenty-three million, three hundred twenty thousand, eight hundred seventy-one".