1322331320 has 32 divisors (see below), whose sum is σ = 3002551200. Its totient is φ = 524078208.

The previous prime is 1322331317. The next prime is 1322331331. The reversal of 1322331320 is 231332231.

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 = 1322331292 and 1322331301.

It is a congruent number.

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, 147284 + ... + 156003.

It is an arithmetic number, because the mean of its divisors is an integer number (93829725).

Almost surely, 2^1322331320 is an apocalyptic number.

1322331320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322331320 is an abundant number, since it is smaller than the sum of its proper divisors (1680219880).

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

1322331320 is a wasteful number, since it uses less digits than its factorization.

1322331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303407 (or 303403 counting only the distinct ones).

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

The square root of 1322331320 is about 36363.8738310428. The cubic root of 1322331320 is about 1097.6067306258.

Adding to 1322331320 its reverse (231332231), we get a palindrome (1553663551).

The spelling of 1322331320 in words is "one billion, three hundred twenty-two million, three hundred thirty-one thousand, three hundred twenty".