111230257 has 2 divisors, whose sum is σ = 111230258. Its totient is φ = 111230256.

The previous prime is 111230179. The next prime is 111230279. The reversal of 111230257 is 752032111.

It is a happy number.

It is an a-pointer prime, because the next prime (111230279) can be obtained adding 111230257 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78694641 + 32535616 = 8871^2 + 5704^2 .

It is a cyclic number.

It is not a de Polignac number, because 111230257 - 2⁷ = 111230129 is a prime.

It is not a weakly prime, because it can be changed into another prime (111230857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615128 + 55615129.

It is an arithmetic number, because the mean of its divisors is an integer number (55615129).

Almost surely, 2^111230257 is an apocalyptic number.

It is an amenable number.

111230257 is a deficient number, since it is larger than the sum of its proper divisors (1).

111230257 is an equidigital number, since it uses as much as digits as its factorization.

111230257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 111230257 is about 10546.5756053802. The cubic root of 111230257 is about 480.9216334913.

Adding to 111230257 its reverse (752032111), we get a palindrome (863262368).

The spelling of 111230257 in words is "one hundred eleven million, two hundred thirty thousand, two hundred fifty-seven".