311543302354012 has 24 divisors (see below), whose sum is σ = 552882348611712. Its totient is φ = 153576938348400.

The previous prime is 311543302353949. The next prime is 311543302354021. The reversal of 311543302354012 is 210453203345113.

It is a happy number.

It is a super-2 number, since 2×311543302354012² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58370103 + ... + 63483505.

It is an arithmetic number, because the mean of its divisors is an integer number (23036764525488).

Almost surely, 2^{311543302354012} is an apocalyptic number.

It is an amenable number.

311543302354012 is a deficient number, since it is larger than the sum of its proper divisors (241339046257700).

311543302354012 is a wasteful number, since it uses less digits than its factorization.

311543302354012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328009 (or 5328007 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 311543302354012 its reverse (210453203345113), we get a palindrome (521996505699125).

The spelling of 311543302354012 in words is "three hundred eleven trillion, five hundred forty-three billion, three hundred two million, three hundred fifty-four thousand, twelve".