111401423 has 4 divisors (see below), whose sum is σ = 127315920. Its totient is φ = 95486928.

The previous prime is 111401419. The next prime is 111401429. The reversal of 111401423 is 324104111.

It is a happy number.

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 111401423 - 2² = 111401419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111401429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7957238 + ... + 7957251.

It is an arithmetic number, because the mean of its divisors is an integer number (31828980).

Almost surely, 2^111401423 is an apocalyptic number.

111401423 is a deficient number, since it is larger than the sum of its proper divisors (15914497).

111401423 is an equidigital number, since it uses as much as digits as its factorization.

111401423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15914496.

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

The square root of 111401423 is about 10554.6872525907. The cubic root of 111401423 is about 481.1681948319.

Adding to 111401423 its reverse (324104111), we get a palindrome (435505534).

The spelling of 111401423 in words is "one hundred eleven million, four hundred one thousand, four hundred twenty-three".