1323113111 has 24 divisors (see below), whose sum is σ = 1474943904. Its totient is φ = 1182663680.

The previous prime is 1323113107. The next prime is 1323113131. The reversal of 1323113111 is 1113113231.

It is not a de Polignac number, because 1323113111 - 2² = 1323113107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 1323113111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323113131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1501391 + ... + 1502271.

It is an arithmetic number, because the mean of its divisors is an integer number (61455996).

Almost surely, 2^1323113111 is an apocalyptic number.

1323113111 is a deficient number, since it is larger than the sum of its proper divisors (151830793).

1323113111 is a wasteful number, since it uses less digits than its factorization.

1323113111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1088 counting only the distinct ones).

The product of its digits is 54, while the sum is 17.

The square root of 1323113111 is about 36374.6217987212. The cubic root of 1323113111 is about 1097.8229976579.

Adding to 1323113111 its reverse (1113113231), we get a palindrome (2436226342).

The spelling of 1323113111 in words is "one billion, three hundred twenty-three million, one hundred thirteen thousand, one hundred eleven".