1322313320 has 16 divisors (see below), whose sum is σ = 2975205060. Its totient is φ = 528925312.

The previous prime is 1322313283. The next prime is 1322313331. The reversal of 1322313320 is 233132231.

It can be written as a sum of positive squares in 2 ways, for example, as 1316093284 + 6220036 = 36278^2 + 2494^2 .

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 = 1322313292 and 1322313301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16528877 + ... + 16528956.

Almost surely, 2^1322313320 is an apocalyptic number.

1322313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322313320 is an abundant number, since it is smaller than the sum of its proper divisors (1652891740).

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

1322313320 is a wasteful number, since it uses less digits than its factorization.

1322313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33057844 (or 33057840 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1322313320 is about 36363.6263318168. The cubic root of 1322313320 is about 1097.6017502777.

Adding to 1322313320 its reverse (233132231), we get a palindrome (1555445551).

The spelling of 1322313320 in words is "one billion, three hundred twenty-two million, three hundred thirteen thousand, three hundred twenty".