111528943 has 4 divisors (see below), whose sum is σ = 111550608. Its totient is φ = 111507280.

The previous prime is 111528941. The next prime is 111528973. The reversal of 111528943 is 349825111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111528943 - 2¹ = 111528941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111528899 and 111528908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111528941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803 + ... + 15043.

It is an arithmetic number, because the mean of its divisors is an integer number (27887652).

Almost surely, 2^111528943 is an apocalyptic number.

111528943 is a deficient number, since it is larger than the sum of its proper divisors (21665).

111528943 is an equidigital number, since it uses as much as digits as its factorization.

111528943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21664.

The product of its digits is 8640, while the sum is 34.

The square root of 111528943 is about 10560.7264428163. The cubic root of 111528943 is about 481.3517208266.

The spelling of 111528943 in words is "one hundred eleven million, five hundred twenty-eight thousand, nine hundred forty-three".