1311320111233 has 16 divisors (see below), whose sum is σ = 1438569804672. Its totient is φ = 1185411456000.

The previous prime is 1311320111209. The next prime is 1311320111237. The reversal of 1311320111233 is 3321110231131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311320111233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311320111237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27119148 + ... + 27167458.

It is an arithmetic number, because the mean of its divisors is an integer number (89910612792).

Almost surely, 2^{1311320111233} is an apocalyptic number.

It is an amenable number.

1311320111233 is a deficient number, since it is larger than the sum of its proper divisors (127249693439).

1311320111233 is a wasteful number, since it uses less digits than its factorization.

1311320111233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62136.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1311320111233 its reverse (3321110231131), we get a palindrome (4632430342364).

The spelling of 1311320111233 in words is "one trillion, three hundred eleven billion, three hundred twenty million, one hundred eleven thousand, two hundred thirty-three".