111131311302312 has 64 divisors (see below), whose sum is σ = 327760549478400. Its totient is φ = 30727551510720.

The previous prime is 111131311302287. The next prime is 111131311302313. The reversal of 111131311302312 is 213203113131111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (111131311302313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10669283512 + ... + 10669293927.

It is an arithmetic number, because the mean of its divisors is an integer number (5121258585600).

Almost surely, 2^{111131311302312} is an apocalyptic number.

111131311302312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111131311302312 is an abundant number, since it is smaller than the sum of its proper divisors (216629238176088).

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

111131311302312 is a wasteful number, since it uses less digits than its factorization.

111131311302312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21338577486 (or 21338577482 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

Adding to 111131311302312 its reverse (213203113131111), we get a palindrome (324334424433423).

The spelling of 111131311302312 in words is "one hundred eleven trillion, one hundred thirty-one billion, three hundred eleven million, three hundred two thousand, three hundred twelve".