311121333133 has 16 divisors (see below), whose sum is σ = 354636755200. Its totient is φ = 270570507840.

The previous prime is 311121333119. The next prime is 311121333137. The reversal of 311121333133 is 331333121113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311121333133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311121333098 and 311121333107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311121333137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3434853 + ... + 3524266.

It is an arithmetic number, because the mean of its divisors is an integer number (22164797200).

Almost surely, 2^311121333133 is an apocalyptic number.

It is an amenable number.

311121333133 is a deficient number, since it is larger than the sum of its proper divisors (43515422067).

311121333133 is a wasteful number, since it uses less digits than its factorization.

311121333133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959332.

The product of its digits is 1458, while the sum is 25.

Adding to 311121333133 its reverse (331333121113), we get a palindrome (642454454246).

The spelling of 311121333133 in words is "three hundred eleven billion, one hundred twenty-one million, three hundred thirty-three thousand, one hundred thirty-three".