111232085 has 4 divisors (see below), whose sum is σ = 133478508. Its totient is φ = 88985664.

The previous prime is 111232073. The next prime is 111232087. The reversal of 111232085 is 580232111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580232111 = 17257 ⋅33623.

It can be written as a sum of positive squares in 2 ways, for example, as 68277169 + 42954916 = 8263^2 + 6554^2 .

It is a cyclic number.

It is not a de Polignac number, because 111232085 - 2⁶ = 111232021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111232085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111232087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11123204 + ... + 11123213.

It is an arithmetic number, because the mean of its divisors is an integer number (33369627).

Almost surely, 2^111232085 is an apocalyptic number.

It is an amenable number.

111232085 is a deficient number, since it is larger than the sum of its proper divisors (22246423).

111232085 is an equidigital number, since it uses as much as digits as its factorization.

111232085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22246422.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 111232085 is about 10546.6622682250. The cubic root of 111232085 is about 480.9242680261.

Adding to 111232085 its reverse (580232111), we get a palindrome (691464196).

It can be divided in two parts, 11123 and 2085, that multiplied together give a triangular number (23191455 = T₆₈₁₀).

The spelling of 111232085 in words is "one hundred eleven million, two hundred thirty-two thousand, eighty-five".