111880321 has 4 divisors (see below), whose sum is σ = 127863232. Its totient is φ = 95897412.

The previous prime is 111880319. The next prime is 111880331. The reversal of 111880321 is 123088111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123088111 = 23 ⋅5351657.

It is a cyclic number.

It is not a de Polignac number, because 111880321 - 2¹ = 111880319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111880331) 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, 7991445 + ... + 7991458.

It is an arithmetic number, because the mean of its divisors is an integer number (31965808).

Almost surely, 2^111880321 is an apocalyptic number.

It is an amenable number.

111880321 is a deficient number, since it is larger than the sum of its proper divisors (15982911).

111880321 is an equidigital number, since it uses as much as digits as its factorization.

111880321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15982910.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 111880321 is about 10577.3494316866. The cubic root of 111880321 is about 481.8566991344.

The spelling of 111880321 in words is "one hundred eleven million, eight hundred eighty thousand, three hundred twenty-one".