105143111 has 2 divisors, whose sum is σ = 105143112. Its totient is φ = 105143110.

The previous prime is 105143107. The next prime is 105143123. The reversal of 105143111 is 111341501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105143111 - 2² = 105143107 is a prime.

It is a super-2 number, since 2×105143111² = 22110147581516642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105143111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105143161) 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, 52571555 + 52571556.

It is an arithmetic number, because the mean of its divisors is an integer number (52571556).

Almost surely, 2^105143111 is an apocalyptic number.

105143111 is a deficient number, since it is larger than the sum of its proper divisors (1).

105143111 is an equidigital number, since it uses as much as digits as its factorization.

105143111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 105143111 is about 10253.9314899213. The cubic root of 105143111 is about 471.9836353012.

Adding to 105143111 its reverse (111341501), we get a palindrome (216484612).

The spelling of 105143111 in words is "one hundred five million, one hundred forty-three thousand, one hundred eleven".