311071618012 has 24 divisors (see below), whose sum is σ = 545591733120. Its totient is φ = 155188432320.

The previous prime is 311071617937. The next prime is 311071618019. The reversal of 311071618012 is 210816170113.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311071618019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8384062 + ... + 8421082.

It is an arithmetic number, because the mean of its divisors is an integer number (22732988880).

Almost surely, 2^311071618012 is an apocalyptic number.

It is an amenable number.

311071618012 is a deficient number, since it is larger than the sum of its proper divisors (234520115108).

311071618012 is a wasteful number, since it uses less digits than its factorization.

311071618012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41661 (or 41659 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

Adding to 311071618012 its reverse (210816170113), we get a palindrome (521887788125).

The spelling of 311071618012 in words is "three hundred eleven billion, seventy-one million, six hundred eighteen thousand, twelve".