1311111241 has 8 divisors (see below), whose sum is σ = 1476442368. Its totient is φ = 1153470000.

The previous prime is 1311111227. The next prime is 1311111293. The reversal of 1311111241 is 1421111131.

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 1311111241 - 2⁹ = 1311110729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311111211) 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, 1922110 + ... + 1922791.

It is an arithmetic number, because the mean of its divisors is an integer number (184555296).

Almost surely, 2^1311111241 is an apocalyptic number.

1311111241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1311111241 is a deficient number, since it is larger than the sum of its proper divisors (165331127).

1311111241 is a wasteful number, since it uses less digits than its factorization.

1311111241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844943.

The product of its digits is 24, while the sum is 16.

The square root of 1311111241 is about 36209.2700975869. The cubic root of 1311111241 is about 1094.4934838264.

Adding to 1311111241 its reverse (1421111131), we get a palindrome (2732222372).

The spelling of 1311111241 in words is "one billion, three hundred eleven million, one hundred eleven thousand, two hundred forty-one".