111540413 has 2 divisors, whose sum is σ = 111540414. Its totient is φ = 111540412.

The previous prime is 111540347. The next prime is 111540427. The reversal of 111540413 is 314045111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99960004 + 11580409 = 9998^2 + 3403^2 .

It is an emirp because it is prime and its reverse (314045111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111540413 - 2⁸ = 111540157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111540433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55770206 + 55770207.

It is an arithmetic number, because the mean of its divisors is an integer number (55770207).

Almost surely, 2^111540413 is an apocalyptic number.

It is an amenable number.

111540413 is a deficient number, since it is larger than the sum of its proper divisors (1).

111540413 is an equidigital number, since it uses as much as digits as its factorization.

111540413 is an odious number, because the sum of its binary digits is odd.

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

The square root of 111540413 is about 10561.2694786186. The cubic root of 111540413 is about 481.3682215209.

Adding to 111540413 its reverse (314045111), we get a palindrome (425585524).

The spelling of 111540413 in words is "one hundred eleven million, five hundred forty thousand, four hundred thirteen".