231112111131000 has 192 divisors, whose sum is σ = 852173384680800. Its totient is φ = 56027178432000.

The previous prime is 231112111130917. The next prime is 231112111131001. The reversal of 231112111131000 is 131111211132.

231112111131000 is a `hidden beast` number, since 23 + 111 + 211 + 11 + 310 + 0 + 0 = 666.

231112111131000 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231112111131000² (a number of 30 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231112111131001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1167133885 + ... + 1167331884.

Almost surely, 2^{231112111131000} is an apocalyptic number.

231112111131000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231112111131000 is an abundant number, since it is smaller than the sum of its proper divisors (621061273549800).

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

231112111131000 is a wasteful number, since it uses less digits than its factorization.

231112111131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334465807 (or 2334465790 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 231112111131000 its reverse (131111211132), we get a palindrome (231243222342132).

The spelling of 231112111131000 in words is "two hundred thirty-one trillion, one hundred twelve billion, one hundred eleven million, one hundred thirty-one thousand".