113112131312 has 40 divisors (see below), whose sum is σ = 223246180080. Its totient is φ = 55503457280.

The previous prime is 113112131221. The next prime is 113112131357. The reversal of 113112131312 is 213131211311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458762 + ... + 660822.

It is an arithmetic number, because the mean of its divisors is an integer number (5581154502).

Almost surely, 2^113112131312 is an apocalyptic number.

It is an amenable number.

113112131312 is a deficient number, since it is larger than the sum of its proper divisors (110134048768).

113112131312 is a wasteful number, since it uses less digits than its factorization.

113112131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202721 (or 202715 counting only the distinct ones).

The product of its digits is 108, while the sum is 20.

Adding to 113112131312 its reverse (213131211311), we get a palindrome (326243342623).

The spelling of 113112131312 in words is "one hundred thirteen billion, one hundred twelve million, one hundred thirty-one thousand, three hundred twelve".