1324340921 has 2 divisors, whose sum is σ = 1324340922. Its totient is φ = 1324340920.

The previous prime is 1324340909. The next prime is 1324340947. The reversal of 1324340921 is 1290434231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1311236521 + 13104400 = 36211^2 + 3620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1324340921 - 2²⁶ = 1257232057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1324340951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662170460 + 662170461.

It is an arithmetic number, because the mean of its divisors is an integer number (662170461).

Almost surely, 2^1324340921 is an apocalyptic number.

It is an amenable number.

1324340921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324340921 is an equidigital number, since it uses as much as digits as its factorization.

1324340921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1324340921 is about 36391.4951740101. The cubic root of 1324340921 is about 1098.1624751411.

The spelling of 1324340921 in words is "one billion, three hundred twenty-four million, three hundred forty thousand, nine hundred twenty-one".