311303000133 has 6 divisors (see below), whose sum is σ = 449659889094. Its totient is φ = 207535333416.

The previous prime is 311303000101. The next prime is 311303000167. The reversal of 311303000133 is 331000303113.

It can be written as a sum of positive squares in only one way, i.e., 307023485409 + 4279514724 = 554097^2 + 65418^2 .

It is not a de Polignac number, because 311303000133 - 2⁵ = 311303000101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311303000033) 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 5 ways as a sum of consecutive naturals, for example, 17294611110 + ... + 17294611127.

It is an arithmetic number, because the mean of its divisors is an integer number (74943314849).

Almost surely, 2^311303000133 is an apocalyptic number.

It is an amenable number.

311303000133 is a deficient number, since it is larger than the sum of its proper divisors (138356888961).

311303000133 is a wasteful number, since it uses less digits than its factorization.

311303000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34589222243 (or 34589222240 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

Adding to 311303000133 its reverse (331000303113), we get a palindrome (642303303246).

The spelling of 311303000133 in words is "three hundred eleven billion, three hundred three million, one hundred thirty-three", and thus it is an aban number.