1311413111 has 4 divisors (see below), whose sum is σ = 1311736224. Its totient is φ = 1311090000.

The previous prime is 1311413107. The next prime is 1311413137. The reversal of 1311413111 is 1113141131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311413111 - 2² = 1311413107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311413111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311413161) 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 3 ways as a sum of consecutive naturals, for example, 155390 + ... + 163611.

It is an arithmetic number, because the mean of its divisors is an integer number (327934056).

Almost surely, 2^1311413111 is an apocalyptic number.

1311413111 is a deficient number, since it is larger than the sum of its proper divisors (323113).

1311413111 is an equidigital number, since it uses as much as digits as its factorization.

1311413111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323112.

The product of its digits is 36, while the sum is 17.

The square root of 1311413111 is about 36213.4382653733. The cubic root of 1311413111 is about 1094.5774760370.

Adding to 1311413111 its reverse (1113141131), we get a palindrome (2424554242).

The spelling of 1311413111 in words is "one billion, three hundred eleven million, four hundred thirteen thousand, one hundred eleven".