1321331113 has 8 divisors (see below), whose sum is σ = 1336975200. Its totient is φ = 1305704928.

The previous prime is 1321331111. The next prime is 1321331159. The reversal of 1321331113 is 3111331231.

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 1321331113 - 2¹ = 1321331111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321331111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196318 + ... + 202936.

It is an arithmetic number, because the mean of its divisors is an integer number (167121900).

Almost surely, 2^1321331113 is an apocalyptic number.

It is an amenable number.

1321331113 is a deficient number, since it is larger than the sum of its proper divisors (15644087).

1321331113 is an equidigital number, since it uses as much as digits as its factorization.

1321331113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8951.

The product of its digits is 162, while the sum is 19.

The square root of 1321331113 is about 36350.1184729844. The cubic root of 1321331113 is about 1097.3299187975.

Adding to 1321331113 its reverse (3111331231), we get a palindrome (4432662344).

The spelling of 1321331113 in words is "one billion, three hundred twenty-one million, three hundred thirty-one thousand, one hundred thirteen".