1311541211 has 16 divisors (see below), whose sum is σ = 1482935040. Its totient is φ = 1153367040.

The previous prime is 1311541201. The next prime is 1311541223. The reversal of 1311541211 is 1121451131.

It is not a de Polignac number, because 1311541211 - 2²² = 1307346907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311541201) 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 15 ways as a sum of consecutive naturals, for example, 27626 + ... + 58191.

It is an arithmetic number, because the mean of its divisors is an integer number (92683440).

Almost surely, 2^1311541211 is an apocalyptic number.

1311541211 is a deficient number, since it is larger than the sum of its proper divisors (171393829).

1311541211 is a wasteful number, since it uses less digits than its factorization.

1311541211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85894.

The product of its digits is 120, while the sum is 20.

The square root of 1311541211 is about 36215.2069026259. The cubic root of 1311541211 is about 1094.6131146440.

Adding to 1311541211 its reverse (1121451131), we get a palindrome (2432992342).

The spelling of 1311541211 in words is "one billion, three hundred eleven million, five hundred forty-one thousand, two hundred eleven".