111341161 has 2 divisors, whose sum is σ = 111341162. Its totient is φ = 111341160.

The previous prime is 111341141. The next prime is 111341171. The reversal of 111341161 is 161143111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110670400 + 670761 = 10520^2 + 819^2 .

It is a cyclic number.

It is not a de Polignac number, because 111341161 - 2⁵ = 111341129 is a prime.

It is not a weakly prime, because it can be changed into another prime (111341101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55670580 + 55670581.

It is an arithmetic number, because the mean of its divisors is an integer number (55670581).

Almost surely, 2^111341161 is an apocalyptic number.

It is an amenable number.

111341161 is a deficient number, since it is larger than the sum of its proper divisors (1).

111341161 is an equidigital number, since it uses as much as digits as its factorization.

111341161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 19.

The square root of 111341161 is about 10551.8321157987. The cubic root of 111341161 is about 481.0814174012.

Adding to 111341161 its reverse (161143111), we get a palindrome (272484272).

The spelling of 111341161 in words is "one hundred eleven million, three hundred forty-one thousand, one hundred sixty-one".