311323430044 has 12 divisors (see below), whose sum is σ = 594344730168. Its totient is φ = 141510650000.

The previous prime is 311323430029. The next prime is 311323430087. The reversal of 311323430044 is 440034323113.

It is a super-2 number, since 2×311323430044² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311323429994 and 311323430021.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3537766207 + ... + 3537766294.

It is an arithmetic number, because the mean of its divisors is an integer number (49528727514).

Almost surely, 2^311323430044 is an apocalyptic number.

It is an amenable number.

311323430044 is a deficient number, since it is larger than the sum of its proper divisors (283021300124).

311323430044 is a wasteful number, since it uses less digits than its factorization.

311323430044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075532516 (or 7075532514 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 311323430044 its reverse (440034323113), we get a palindrome (751357753157).

The spelling of 311323430044 in words is "three hundred eleven billion, three hundred twenty-three million, four hundred thirty thousand, forty-four".