1324688321 has 4 divisors (see below), whose sum is σ = 1445114544. Its totient is φ = 1204262100.

The previous prime is 1324688317. The next prime is 1324688327. The reversal of 1324688321 is 1238864231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1324688321 - 2² = 1324688317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1324688327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60213095 + ... + 60213116.

It is an arithmetic number, because the mean of its divisors is an integer number (361278636).

Almost surely, 2^1324688321 is an apocalyptic number.

1324688321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1324688321 is a deficient number, since it is larger than the sum of its proper divisors (120426223).

1324688321 is a wasteful number, since it uses less digits than its factorization.

1324688321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120426222.

The product of its digits is 55296, while the sum is 38.

The square root of 1324688321 is about 36396.2679542834. The cubic root of 1324688321 is about 1098.2584897660.

The spelling of 1324688321 in words is "one billion, three hundred twenty-four million, six hundred eighty-eight thousand, three hundred twenty-one".