1323016320 has 64 divisors (see below), whose sum is σ = 4217120640. Its totient is φ = 352803840.

The previous prime is 1323016297. The next prime is 1323016333. The reversal of 1323016320 is 236103231.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

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, 342616 + ... + 346455.

It is an arithmetic number, because the mean of its divisors is an integer number (65892510).

Almost surely, 2^1323016320 is an apocalyptic number.

1323016320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323016320 is an abundant number, since it is smaller than the sum of its proper divisors (2894104320).

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

1323016320 is an equidigital number, since it uses as much as digits as its factorization.

1323016320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689093 (or 689081 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1323016320 is about 36373.2913000735. The cubic root of 1323016320 is about 1097.7962269618.

Adding to 1323016320 its reverse (236103231), we get a palindrome (1559119551).

The spelling of 1323016320 in words is "one billion, three hundred twenty-three million, sixteen thousand, three hundred twenty".