111992312 has 16 divisors (see below), whose sum is σ = 212025840. Its totient is φ = 55452096.

The previous prime is 111992291. The next prime is 111992317. The reversal of 111992312 is 213299111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111992317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67133 + ... + 68780.

It is an arithmetic number, because the mean of its divisors is an integer number (13251615).

Almost surely, 2^111992312 is an apocalyptic number.

It is an amenable number.

111992312 is a deficient number, since it is larger than the sum of its proper divisors (100033528).

111992312 is a wasteful number, since it uses less digits than its factorization.

111992312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136022 (or 136018 counting only the distinct ones).

The product of its digits is 972, while the sum is 29.

The square root of 111992312 is about 10582.6420141664. The cubic root of 111992312 is about 482.0174233126.

The spelling of 111992312 in words is "one hundred eleven million, nine hundred ninety-two thousand, three hundred twelve".