111165407 has 2 divisors, whose sum is σ = 111165408. Its totient is φ = 111165406.

The previous prime is 111165377. The next prime is 111165413. The reversal of 111165407 is 704561111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (704561111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111165407 - 2⁶ = 111165343 is a prime.

It is a Chen prime.

It is equal to p_6366140 and since 111165407 and 6366140 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111165437) 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, 55582703 + 55582704.

It is an arithmetic number, because the mean of its divisors is an integer number (55582704).

Almost surely, 2^111165407 is an apocalyptic number.

111165407 is a deficient number, since it is larger than the sum of its proper divisors (1).

111165407 is an equidigital number, since it uses as much as digits as its factorization.

111165407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 111165407 is about 10543.5006994831. The cubic root of 111165407 is about 480.8281522396.

The spelling of 111165407 in words is "one hundred eleven million, one hundred sixty-five thousand, four hundred seven".