1211341313 has 8 divisors (see below), whose sum is σ = 1490881728. Its totient is φ = 958423824.

The previous prime is 1211341309. The next prime is 1211341321. The reversal of 1211341313 is 3131431121.

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 1211341313 - 2² = 1211341309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211341393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6655631 + ... + 6655812.

It is an arithmetic number, because the mean of its divisors is an integer number (186360216).

Almost surely, 2^1211341313 is an apocalyptic number.

1211341313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1211341313 is a deficient number, since it is larger than the sum of its proper divisors (279540415).

1211341313 is a wasteful number, since it uses less digits than its factorization.

1211341313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13311463.

The product of its digits is 216, while the sum is 20.

The square root of 1211341313 is about 34804.3289405212. The cubic root of 1211341313 is about 1065.9958396091.

Adding to 1211341313 its reverse (3131431121), we get a palindrome (4342772434).

The spelling of 1211341313 in words is "one billion, two hundred eleven million, three hundred forty-one thousand, three hundred thirteen".