1321313211 has 12 divisors (see below), whose sum is σ = 1908989992. Its totient is φ = 880678656.

The previous prime is 1321313197. The next prime is 1321313243. The reversal of 1321313211 is 1123131231.

It is not a de Polignac number, because 1321313211 - 2¹¹ = 1321311163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321313261) 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 11 ways as a sum of consecutive naturals, for example, 34395 + ... + 61851.

Almost surely, 2^1321313211 is an apocalyptic number.

1321313211 is a deficient number, since it is larger than the sum of its proper divisors (587676781).

1321313211 is a wasteful number, since it uses less digits than its factorization.

1321313211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32810 (or 32807 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1321313211 is about 36349.8722281111. The cubic root of 1321313211 is about 1097.3249630654.

Adding to 1321313211 its reverse (1123131231), we get a palindrome (2444444442).

The spelling of 1321313211 in words is "one billion, three hundred twenty-one million, three hundred thirteen thousand, two hundred eleven".