1328081213 has 8 divisors (see below), whose sum is σ = 1337101920. Its totient is φ = 1319083920.

The previous prime is 1328081207. The next prime is 1328081221. The reversal of 1328081213 is 3121808231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1328081213 - 2⁴ = 1328081197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328081113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116498 + ... + 127388.

It is an arithmetic number, because the mean of its divisors is an integer number (167137740).

Almost surely, 2^1328081213 is an apocalyptic number.

It is an amenable number.

1328081213 is a deficient number, since it is larger than the sum of its proper divisors (9020707).

1328081213 is a wasteful number, since it uses less digits than its factorization.

1328081213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11707.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1328081213 is about 36442.8485851477. The cubic root of 1328081213 is about 1099.1953379707.

Adding to 1328081213 its reverse (3121808231), we get a palindrome (4449889444).

The spelling of 1328081213 in words is "one billion, three hundred twenty-eight million, eighty-one thousand, two hundred thirteen".