1323216847 has 4 divisors (see below), whose sum is σ = 1341853776. Its totient is φ = 1304579920.

The previous prime is 1323216833. The next prime is 1323216871. The reversal of 1323216847 is 7486123231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323216847 - 2¹⁹ = 1322692559 is a prime.

It is a pancake number, because a pancake can be divided into 1323216847 parts by 51443 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323216047) 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, 9318358 + ... + 9318499.

It is an arithmetic number, because the mean of its divisors is an integer number (335463444).

Almost surely, 2^1323216847 is an apocalyptic number.

1323216847 is a deficient number, since it is larger than the sum of its proper divisors (18636929).

1323216847 is an equidigital number, since it uses as much as digits as its factorization.

1323216847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18636928.

The product of its digits is 48384, while the sum is 37.

The square root of 1323216847 is about 36376.0477099973. The cubic root of 1323216847 is about 1097.8516877700.

The spelling of 1323216847 in words is "one billion, three hundred twenty-three million, two hundred sixteen thousand, eight hundred forty-seven".