1323664427 has 2 divisors, whose sum is σ = 1323664428. Its totient is φ = 1323664426.

The previous prime is 1323664423. The next prime is 1323664477. The reversal of 1323664427 is 7244663231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323664427 - 2² = 1323664423 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323664423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661832213 + 661832214.

It is an arithmetic number, because the mean of its divisors is an integer number (661832214).

Almost surely, 2^1323664427 is an apocalyptic number.

1323664427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323664427 is an equidigital number, since it uses as much as digits as its factorization.

1323664427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 38.

The square root of 1323664427 is about 36382.1993150497. The cubic root of 1323664427 is about 1097.9754571197.

The spelling of 1323664427 in words is "one billion, three hundred twenty-three million, six hundred sixty-four thousand, four hundred twenty-seven".