111028361 has 2 divisors, whose sum is σ = 111028362. Its totient is φ = 111028360.

The previous prime is 111028349. The next prime is 111028363. The reversal of 111028361 is 163820111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98883136 + 12145225 = 9944^2 + 3485^2 .

It is a cyclic number.

It is not a de Polignac number, because 111028361 - 2⁶ = 111028297 is a prime.

Together with 111028363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111028363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55514180 + 55514181.

It is an arithmetic number, because the mean of its divisors is an integer number (55514181).

Almost surely, 2^111028361 is an apocalyptic number.

It is an amenable number.

111028361 is a deficient number, since it is larger than the sum of its proper divisors (1).

111028361 is an equidigital number, since it uses as much as digits as its factorization.

111028361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 111028361 is about 10536.9996203853. Note that the first 3 decimals coincide. The cubic root of 111028361 is about 480.6304808169.

Adding to 111028361 its reverse (163820111), we get a palindrome (274848472).

The spelling of 111028361 in words is "one hundred eleven million, twenty-eight thousand, three hundred sixty-one".