311312320133 has 8 divisors (see below), whose sum is σ = 317715696000. Its totient is φ = 304928557648.

The previous prime is 311312320129. The next prime is 311312320159. The reversal of 311312320133 is 331023213113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311312320133 - 2² = 311312320129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311312320099 and 311312320108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311312520133) 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 7 ways as a sum of consecutive naturals, for example, 4871273 + ... + 4934766.

It is an arithmetic number, because the mean of its divisors is an integer number (39714462000).

Almost surely, 2^311312320133 is an apocalyptic number.

It is an amenable number.

311312320133 is a deficient number, since it is larger than the sum of its proper divisors (6403375867).

311312320133 is an equidigital number, since it uses as much as digits as its factorization.

311312320133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9806691.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 311312320133 its reverse (331023213113), we get a palindrome (642335533246).

The spelling of 311312320133 in words is "three hundred eleven billion, three hundred twelve million, three hundred twenty thousand, one hundred thirty-three".