111530423 has 4 divisors (see below), whose sum is σ = 111553200. Its totient is φ = 111507648.

The previous prime is 111530417. The next prime is 111530429. The reversal of 111530423 is 324035111.

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

It is an interprime number because it is at equal distance from previous prime (111530417) and next prime (111530429).

It is a cyclic number.

It is not a de Polignac number, because 111530423 - 2¹⁰ = 111529399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111530395 and 111530404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111530429) 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, 698 + ... + 14951.

It is an arithmetic number, because the mean of its divisors is an integer number (27888300).

Almost surely, 2^111530423 is an apocalyptic number.

111530423 is a deficient number, since it is larger than the sum of its proper divisors (22777).

111530423 is an equidigital number, since it uses as much as digits as its factorization.

111530423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22776.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 111530423 is about 10560.7965135211. The cubic root of 111530423 is about 481.3538500120.

Adding to 111530423 its reverse (324035111), we get a palindrome (435565534).

The spelling of 111530423 in words is "one hundred eleven million, five hundred thirty thousand, four hundred twenty-three".