111712841 has 4 divisors (see below), whose sum is σ = 112200900. Its totient is φ = 111224784.

The previous prime is 111712807. The next prime is 111712877. The reversal of 111712841 is 148217111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108576400 + 3136441 = 10420^2 + 1771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111712841 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 111712841.

It is not an unprimeable number, because it can be changed into a prime (111712801) 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, 243686 + ... + 244143.

It is an arithmetic number, because the mean of its divisors is an integer number (28050225).

Almost surely, 2^111712841 is an apocalyptic number.

It is an amenable number.

111712841 is a deficient number, since it is larger than the sum of its proper divisors (488059).

111712841 is an equidigital number, since it uses as much as digits as its factorization.

111712841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488058.

The product of its digits is 448, while the sum is 26.

The square root of 111712841 is about 10569.4295494128. The cubic root of 111712841 is about 481.6161395151.

Adding to 111712841 its reverse (148217111), we get a palindrome (259929952).

The spelling of 111712841 in words is "one hundred eleven million, seven hundred twelve thousand, eight hundred forty-one".