1311323323233 has 64 divisors (see below), whose sum is σ = 2259470942208. Its totient is φ = 656761849920.

The previous prime is 1311323323229. The next prime is 1311323323243. The reversal of 1311323323233 is 3323233231131.

It is not a de Polignac number, because 1311323323233 - 2² = 1311323323229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311323323233.

It is not an unprimeable number, because it can be changed into a prime (1311323323223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 173935 + ... + 1628772.

It is an arithmetic number, because the mean of its divisors is an integer number (35304233472).

Almost surely, 2^{1311323323233} is an apocalyptic number.

It is an amenable number.

1311323323233 is a deficient number, since it is larger than the sum of its proper divisors (948147618975).

1311323323233 is a wasteful number, since it uses less digits than its factorization.

1311323323233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802842.

The product of its digits is 17496, while the sum is 30.

Adding to 1311323323233 its reverse (3323233231131), we get a palindrome (4634556554364).

The spelling of 1311323323233 in words is "one trillion, three hundred eleven billion, three hundred twenty-three million, three hundred twenty-three thousand, two hundred thirty-three".