111432401 has 4 divisors (see below), whose sum is σ = 116277312. Its totient is φ = 106587492.

The previous prime is 111432389. The next prime is 111432407. The reversal of 111432401 is 104234111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104234111 = 67 ⋅1555733.

It is a cyclic number.

It is not a de Polignac number, because 111432401 - 2¹⁰ = 111431377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111432401.

It is not an unprimeable number, because it can be changed into a prime (111432407) 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, 2422421 + ... + 2422466.

It is an arithmetic number, because the mean of its divisors is an integer number (29069328).

Almost surely, 2^111432401 is an apocalyptic number.

It is an amenable number.

111432401 is a deficient number, since it is larger than the sum of its proper divisors (4844911).

111432401 is an equidigital number, since it uses as much as digits as its factorization.

111432401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844910.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 111432401 is about 10556.1546502503. The cubic root of 111432401 is about 481.2127910513.

Adding to 111432401 its reverse (104234111), we get a palindrome (215666512).

The spelling of 111432401 in words is "one hundred eleven million, four hundred thirty-two thousand, four hundred one".