111005407 has 2 divisors, whose sum is σ = 111005408. Its totient is φ = 111005406.

The previous prime is 111005381. The next prime is 111005423. The reversal of 111005407 is 704500111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111005407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111005207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55502703 + 55502704.

It is an arithmetic number, because the mean of its divisors is an integer number (55502704).

Almost surely, 2^111005407 is an apocalyptic number.

111005407 is a deficient number, since it is larger than the sum of its proper divisors (1).

111005407 is an equidigital number, since it uses as much as digits as its factorization.

111005407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 111005407 is about 10535.9103545921. The cubic root of 111005407 is about 480.5973566904.

Adding to 111005407 its reverse (704500111), we get a palindrome (815505518).

The spelling of 111005407 in words is "one hundred eleven million, five thousand, four hundred seven".