111343680 has 336 divisors, whose sum is σ = 458663040. Its totient is φ = 25353216.

The previous prime is 111343663. The next prime is 111343697. The reversal of 111343680 is 86343111.

It is an interprime number because it is at equal distance from previous prime (111343663) and next prime (111343697).

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 423229 + ... + 423491.

Almost surely, 2^111343680 is an apocalyptic number.

111343680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111343680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229331520).

111343680 is an abundant number, since it is smaller than the sum of its proper divisors (347319360).

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

111343680 is a wasteful number, since it uses less digits than its factorization.

111343680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 111343680 is about 10551.9514782812. The cubic root of 111343680 is about 481.0850453945.

Adding to 111343680 its reverse (86343111), we get a palindrome (197686791).

The spelling of 111343680 in words is "one hundred eleven million, three hundred forty-three thousand, six hundred eighty".