111143047 has 2 divisors, whose sum is σ = 111143048. Its totient is φ = 111143046.

The previous prime is 111143041. The next prime is 111143063. The reversal of 111143047 is 740341111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (740341111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111143047 - 2⁷ = 111142919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111143041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571523 + 55571524.

It is an arithmetic number, because the mean of its divisors is an integer number (55571524).

Almost surely, 2^111143047 is an apocalyptic number.

111143047 is a deficient number, since it is larger than the sum of its proper divisors (1).

111143047 is an equidigital number, since it uses as much as digits as its factorization.

111143047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 111143047 is about 10542.4402772793. The cubic root of 111143047 is about 480.7959118790.

Adding to 111143047 its reverse (740341111), we get a palindrome (851484158).

It can be divided in two parts, 11114 and 3047, that added together give a square (14161 = 119²).

The spelling of 111143047 in words is "one hundred eleven million, one hundred forty-three thousand, forty-seven".