311201230020012 has 18 divisors (see below), whose sum is σ = 786647553661788. Its totient is φ = 103733743339992.

The previous prime is 311201230019983. The next prime is 311201230020059. The reversal of 311201230020012 is 210020032102113.

311201230020012 is a `hidden beast` number, since 31 + 1 + 201 + 230 + 0 + 200 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4322239305798 + ... + 4322239305869.

Almost surely, 2^{311201230020012} is an apocalyptic number.

It is an amenable number.

311201230020012 is an abundant number, since it is smaller than the sum of its proper divisors (475446323641776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311201230020012 is a wasteful number, since it uses less digits than its factorization.

311201230020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8644478611677 (or 8644478611672 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 311201230020012 its reverse (210020032102113), we get a palindrome (521221262122125).

The spelling of 311201230020012 in words is "three hundred eleven trillion, two hundred one billion, two hundred thirty million, twenty thousand, twelve".