311302130012 has 12 divisors (see below), whose sum is σ = 544785786216. Its totient is φ = 155649048240.

The previous prime is 311302130011. The next prime is 311302130021. The reversal of 311302130012 is 210031203113.

It is a super-2 number, since 2×311302130012² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311302130011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125243 + ... + 798930.

It is an arithmetic number, because the mean of its divisors is an integer number (45398815518).

Almost surely, 2^311302130012 is an apocalyptic number.

It is an amenable number.

311302130012 is a deficient number, since it is larger than the sum of its proper divisors (233483656204).

311302130012 is a wasteful number, since it uses less digits than its factorization.

311302130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008388 (or 1008386 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 311302130012 its reverse (210031203113), we get a palindrome (521333333125).

The spelling of 311302130012 in words is "three hundred eleven billion, three hundred two million, one hundred thirty thousand, twelve".