1323216827 has 4 divisors (see below), whose sum is σ = 1323289680. Its totient is φ = 1323143976.

The previous prime is 1323216799. The next prime is 1323216833. The reversal of 1323216827 is 7286123231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1323216827 - 2⁸ = 1323216571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323216527) 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, 15353 + ... + 53685.

It is an arithmetic number, because the mean of its divisors is an integer number (330822420).

Almost surely, 2^1323216827 is an apocalyptic number.

1323216827 is a deficient number, since it is larger than the sum of its proper divisors (72853).

1323216827 is an equidigital number, since it uses as much as digits as its factorization.

1323216827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72852.

The product of its digits is 24192, while the sum is 35.

The square root of 1323216827 is about 36376.0474350911. The cubic root of 1323216827 is about 1097.8516822388.

The spelling of 1323216827 in words is "one billion, three hundred twenty-three million, two hundred sixteen thousand, eight hundred twenty-seven".