111342251 has 2 divisors, whose sum is σ = 111342252. Its totient is φ = 111342250.

The previous prime is 111342239. The next prime is 111342269. The reversal of 111342251 is 152243111.

It is a weak prime.

It is an emirp because it is prime and its reverse (152243111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111342251 - 2¹⁰ = 111341227 is a prime.

It is not a weakly prime, because it can be changed into another prime (111342211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55671125 + 55671126.

It is an arithmetic number, because the mean of its divisors is an integer number (55671126).

Almost surely, 2^111342251 is an apocalyptic number.

111342251 is a deficient number, since it is larger than the sum of its proper divisors (1).

111342251 is an equidigital number, since it uses as much as digits as its factorization.

111342251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 20.

The square root of 111342251 is about 10551.8837654705. The cubic root of 111342251 is about 481.0829872820.

Adding to 111342251 its reverse (152243111), we get a palindrome (263585362).

The spelling of 111342251 in words is "one hundred eleven million, three hundred forty-two thousand, two hundred fifty-one".