1322321320 has 32 divisors (see below), whose sum is σ = 2978886600. Its totient is φ = 528277248.

The previous prime is 1322321311. The next prime is 1322321411. The reversal of 1322321320 is 231232231.

It can be written as a sum of positive squares in 4 ways, for example, as 872966116 + 449355204 = 29546^2 + 21198^2 .

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, 13222 + ... + 53098.

Almost surely, 2^1322321320 is an apocalyptic number.

1322321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322321320 is an abundant number, since it is smaller than the sum of its proper divisors (1656565280).

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

1322321320 is a wasteful number, since it uses less digits than its factorization.

1322321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40717 (or 40713 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1322321320 is about 36363.7363316808. The cubic root of 1322321320 is about 1097.6039637713.

Adding to 1322321320 its reverse (231232231), we get a palindrome (1553553551).

It can be divided in two parts, 13223 and 21320, that added together give a palindrome (34543).

The spelling of 1322321320 in words is "one billion, three hundred twenty-two million, three hundred twenty-one thousand, three hundred twenty".