111530401 has 4 divisors (see below), whose sum is σ = 111811732. Its totient is φ = 111249072.

The previous prime is 111530371. The next prime is 111530413. The reversal of 111530401 is 104035111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52548001 + 58982400 = 7249^2 + 7680^2 .

It is a cyclic number.

It is not a de Polignac number, because 111530401 - 2⁹ = 111529889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111530431) 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 in 3 ways as a sum of consecutive naturals, for example, 140070 + ... + 140863.

It is an arithmetic number, because the mean of its divisors is an integer number (27952933).

Almost surely, 2^111530401 is an apocalyptic number.

It is an amenable number.

111530401 is a deficient number, since it is larger than the sum of its proper divisors (281331).

111530401 is an equidigital number, since it uses as much as digits as its factorization.

111530401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281330.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 111530401 is about 10560.7954719330. The cubic root of 111530401 is about 481.3538183621.

Adding to 111530401 its reverse (104035111), we get a palindrome (215565512).

The spelling of 111530401 in words is "one hundred eleven million, five hundred thirty thousand, four hundred one".