111689047 has 2 divisors, whose sum is σ = 111689048. Its totient is φ = 111689046.

The previous prime is 111689041. The next prime is 111689057. The reversal of 111689047 is 740986111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111689047 - 2⁷ = 111688919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111688997 and 111689015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111689041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55844523 + 55844524.

It is an arithmetic number, because the mean of its divisors is an integer number (55844524).

Almost surely, 2^111689047 is an apocalyptic number.

111689047 is a deficient number, since it is larger than the sum of its proper divisors (1).

111689047 is an equidigital number, since it uses as much as digits as its factorization.

111689047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 111689047 is about 10568.3038847300. The cubic root of 111689047 is about 481.5819435414.

The spelling of 111689047 in words is "one hundred eleven million, six hundred eighty-nine thousand, forty-seven".