1323008921 has 16 divisors (see below), whose sum is σ = 1488606336. Its totient is φ = 1166664576.

The previous prime is 1323008881. The next prime is 1323008923. The reversal of 1323008921 is 1298003231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323008921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323008923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282626 + ... + 287268.

It is an arithmetic number, because the mean of its divisors is an integer number (93037896).

Almost surely, 2^1323008921 is an apocalyptic number.

It is an amenable number.

1323008921 is a deficient number, since it is larger than the sum of its proper divisors (165597415).

1323008921 is a wasteful number, since it uses less digits than its factorization.

1323008921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1323008921 is about 36373.1895906862. The cubic root of 1323008921 is about 1097.7941804742.

The spelling of 1323008921 in words is "one billion, three hundred twenty-three million, eight thousand, nine hundred twenty-one".