311312233133 has 12 divisors (see below), whose sum is σ = 342208255200. Its totient is φ = 282992858280.

The previous prime is 311312233123. The next prime is 311312233153. The reversal of 311312233133 is 331332213113.

It is not a de Polignac number, because 311312233133 - 2⁸ = 311312232877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311312233103) 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, 2018816 + ... + 2167542.

It is an arithmetic number, because the mean of its divisors is an integer number (28517354600).

Almost surely, 2^311312233133 is an apocalyptic number.

It is an amenable number.

311312233133 is a deficient number, since it is larger than the sum of its proper divisors (30896022067).

311312233133 is a wasteful number, since it uses less digits than its factorization.

311312233133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166048 (or 166037 counting only the distinct ones).

The product of its digits is 2916, while the sum is 26.

Adding to 311312233133 its reverse (331332213113), we get a palindrome (642644446246).

It can be divided in two parts, 311312 and 233133, that added together give a palindrome (544445).

The spelling of 311312233133 in words is "three hundred eleven billion, three hundred twelve million, two hundred thirty-three thousand, one hundred thirty-three".