111443141 has 4 divisors (see below), whose sum is σ = 112293984. Its totient is φ = 110592300.

The previous prime is 111443131. The next prime is 111443183. The reversal of 111443141 is 141344111.

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: 141344111 = 107 ⋅1320973.

It is a cyclic number.

It is not a de Polignac number, because 111443141 - 2⁶ = 111443077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111443131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425225 + ... + 425486.

It is an arithmetic number, because the mean of its divisors is an integer number (28073496).

Almost surely, 2^111443141 is an apocalyptic number.

It is an amenable number.

111443141 is a deficient number, since it is larger than the sum of its proper divisors (850843).

111443141 is an equidigital number, since it uses as much as digits as its factorization.

111443141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850842.

The product of its digits is 192, while the sum is 20.

The square root of 111443141 is about 10556.6633459631. The cubic root of 111443141 is about 481.2282505266.

Adding to 111443141 its reverse (141344111), we get a palindrome (252787252).

The spelling of 111443141 in words is "one hundred eleven million, four hundred forty-three thousand, one hundred forty-one".