1323103521 has 8 divisors (see below), whose sum is σ = 1764309600. Its totient is φ = 881983232.

The previous prime is 1323103493. The next prime is 1323103559. The reversal of 1323103521 is 1253013231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323103521 - 2⁹ = 1323103009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323107521) 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 7 ways as a sum of consecutive naturals, for example, 38401 + ... + 64193.

It is an arithmetic number, because the mean of its divisors is an integer number (220538700).

Almost surely, 2^1323103521 is an apocalyptic number.

It is an amenable number.

1323103521 is a deficient number, since it is larger than the sum of its proper divisors (441206079).

1323103521 is a wasteful number, since it uses less digits than its factorization.

1323103521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42895.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1323103521 is about 36374.4899758058. The cubic root of 1323103521 is about 1097.8203452901.

Adding to 1323103521 its reverse (1253013231), we get a palindrome (2576116752).

The spelling of 1323103521 in words is "one billion, three hundred twenty-three million, one hundred three thousand, five hundred twenty-one".