1311423321233 has 16 divisors (see below), whose sum is σ = 1384554124800. Its totient is φ = 1239650227200.

The previous prime is 1311423321223. The next prime is 1311423321281. The reversal of 1311423321233 is 3321233241131.

It is a cyclic number.

It is not a de Polignac number, because 1311423321233 - 2¹⁶ = 1311423255697 is a prime.

It is a super-2 number, since 2×1311423321233² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311423321196 and 1311423321205.

It is not an unprimeable number, because it can be changed into a prime (1311423321223) 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, 3697208 + ... + 4036358.

It is an arithmetic number, because the mean of its divisors is an integer number (86534632800).

Almost surely, 2^{1311423321233} is an apocalyptic number.

It is an amenable number.

1311423321233 is a deficient number, since it is larger than the sum of its proper divisors (73130803567).

1311423321233 is a wasteful number, since it uses less digits than its factorization.

1311423321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341152.

The product of its digits is 7776, while the sum is 29.

Adding to 1311423321233 its reverse (3321233241131), we get a palindrome (4632656562364).

The spelling of 1311423321233 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, three hundred twenty-one thousand, two hundred thirty-three".