1323221313 has 12 divisors (see below), whose sum is σ = 1862041488. Its totient is φ = 835718040.

The previous prime is 1323221293. The next prime is 1323221353. The reversal of 1323221313 is 3131223231.

It is not a de Polignac number, because 1323221313 - 2⁵ = 1323221281 is a prime.

It is a super-3 number, since 3×1323221313³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1323221313.

It is not an unprimeable number, because it can be changed into a prime (1323221353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609823 + ... + 611988.

It is an arithmetic number, because the mean of its divisors is an integer number (155170124).

Almost surely, 2^1323221313 is an apocalyptic number.

It is an amenable number.

1323221313 is a deficient number, since it is larger than the sum of its proper divisors (538820175).

1323221313 is a wasteful number, since it uses less digits than its factorization.

1323221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221852 (or 1221833 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1323221313 is about 36376.1090964935. The cubic root of 1323221313 is about 1097.8529228913.

Adding to 1323221313 its reverse (3131223231), we get a palindrome (4454444544).

The spelling of 1323221313 in words is "one billion, three hundred twenty-three million, two hundred twenty-one thousand, three hundred thirteen".