111223143 has 12 divisors (see below), whose sum is σ = 161136768. Its totient is φ = 73926720.

The previous prime is 111223121. The next prime is 111223153. The reversal of 111223143 is 341322111.

It is not a de Polignac number, because 111223143 - 2¹⁰ = 111222119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111223153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15303 + ... + 21368.

It is an arithmetic number, because the mean of its divisors is an integer number (13428064).

Almost surely, 2^111223143 is an apocalyptic number.

111223143 is a deficient number, since it is larger than the sum of its proper divisors (49913625).

111223143 is a wasteful number, since it uses less digits than its factorization.

111223143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37014 (or 37011 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 111223143 is about 10546.2383341171. The cubic root of 111223143 is about 480.9113804375.

Adding to 111223143 its reverse (341322111), we get a palindrome (452545254).

The spelling of 111223143 in words is "one hundred eleven million, two hundred twenty-three thousand, one hundred forty-three".