1311112220312 has 64 divisors (see below), whose sum is σ = 2602903368960. Its totient is φ = 617900976000.

The previous prime is 1311112220287. The next prime is 1311112220389. The reversal of 1311112220312 is 2130222111131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3754043 + ... + 4088405.

It is an arithmetic number, because the mean of its divisors is an integer number (40670365140).

Almost surely, 2^{1311112220312} is an apocalyptic number.

It is an amenable number.

1311112220312 is a deficient number, since it is larger than the sum of its proper divisors (1291791148648).

1311112220312 is a wasteful number, since it uses less digits than its factorization.

1311112220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334704 (or 334700 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1311112220312 its reverse (2130222111131), we get a palindrome (3441334331443).

The spelling of 1311112220312 in words is "one trillion, three hundred eleven billion, one hundred twelve million, two hundred twenty thousand, three hundred twelve".