1323440564 has 24 divisors (see below), whose sum is σ = 2361206400. Its totient is φ = 648866880.

The previous prime is 1323440551. The next prime is 1323440597. The reversal of 1323440564 is 4650443231.

It is a self number, because there is not a number n which added to its sum of digits gives 1323440564.

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, 89669 + ... + 103379.

It is an arithmetic number, because the mean of its divisors is an integer number (98383600).

Almost surely, 2^1323440564 is an apocalyptic number.

It is an amenable number.

1323440564 is a deficient number, since it is larger than the sum of its proper divisors (1037765836).

1323440564 is a wasteful number, since it uses less digits than its factorization.

1323440564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14183 (or 14181 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 1323440564 is about 36379.1226392281. The cubic root of 1323440564 is about 1097.9135557463.

Adding to 1323440564 its reverse (4650443231), we get a palindrome (5973883795).

The spelling of 1323440564 in words is "one billion, three hundred twenty-three million, four hundred forty thousand, five hundred sixty-four".