1313211211 has 8 divisors (see below), whose sum is σ = 1414520240. Its totient is φ = 1211944032.

The previous prime is 1313211209. The next prime is 1313211217. The reversal of 1313211211 is 1121123131.

It is a happy number.

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

It is not a de Polignac number, because 1313211211 - 2¹ = 1313211209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313211217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91780 + ... + 105118.

It is an arithmetic number, because the mean of its divisors is an integer number (176815030).

Almost surely, 2^1313211211 is an apocalyptic number.

1313211211 is a deficient number, since it is larger than the sum of its proper divisors (101309029).

1313211211 is a wasteful number, since it uses less digits than its factorization.

1313211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20925.

The product of its digits is 36, while the sum is 16.

The square root of 1313211211 is about 36238.2561804511. The cubic root of 1313211211 is about 1095.0775119404.

Adding to 1313211211 its reverse (1121123131), we get a palindrome (2434334342).

The spelling of 1313211211 in words is "one billion, three hundred thirteen million, two hundred eleven thousand, two hundred eleven".