1311324111 has 12 divisors (see below), whose sum is σ = 1934436192. Its totient is φ = 855615456.

The previous prime is 1311324109. The next prime is 1311324143. The reversal of 1311324111 is 1114231131.

It is a happy number.

It is not a de Polignac number, because 1311324111 - 2¹ = 1311324109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311324811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1549606 + ... + 1550451.

It is an arithmetic number, because the mean of its divisors is an integer number (161203016).

Almost surely, 2^1311324111 is an apocalyptic number.

1311324111 is a deficient number, since it is larger than the sum of its proper divisors (623112081).

1311324111 is a wasteful number, since it uses less digits than its factorization.

1311324111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100110 (or 3100107 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1311324111 is about 36212.2094189239. The cubic root of 1311324111 is about 1094.5527140460.

Adding to 1311324111 its reverse (1114231131), we get a palindrome (2425555242).

The spelling of 1311324111 in words is "one billion, three hundred eleven million, three hundred twenty-four thousand, one hundred eleven".