111543667 has 2 divisors, whose sum is σ = 111543668. Its totient is φ = 111543666.

The previous prime is 111543589. The next prime is 111543683. The reversal of 111543667 is 766345111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111543667 - 2¹⁵ = 111510899 is a prime.

It is not a weakly prime, because it can be changed into another prime (111543697) 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, 55771833 + 55771834.

It is an arithmetic number, because the mean of its divisors is an integer number (55771834).

Almost surely, 2^111543667 is an apocalyptic number.

111543667 is a deficient number, since it is larger than the sum of its proper divisors (1).

111543667 is an equidigital number, since it uses as much as digits as its factorization.

111543667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 111543667 is about 10561.4235309451. The cubic root of 111543667 is about 481.3729025058.

Adding to 111543667 its reverse (766345111), we get a palindrome (877888778).

The spelling of 111543667 in words is "one hundred eleven million, five hundred forty-three thousand, six hundred sixty-seven".