111747423 has 4 divisors (see below), whose sum is σ = 148996568. Its totient is φ = 74498280.

The previous prime is 111747413. The next prime is 111747431. The reversal of 111747423 is 324747111.

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

It is not a de Polignac number, because 111747423 - 2⁴ = 111747407 is a prime.

It is a super-3 number, since 3×111747423³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111747403) 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, 18624568 + ... + 18624573.

It is an arithmetic number, because the mean of its divisors is an integer number (37249142).

Almost surely, 2^111747423 is an apocalyptic number.

111747423 is a deficient number, since it is larger than the sum of its proper divisors (37249145).

111747423 is an equidigital number, since it uses as much as digits as its factorization.

111747423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37249144.

The product of its digits is 4704, while the sum is 30.

The square root of 111747423 is about 10571.0653673128. The cubic root of 111747423 is about 481.6658310005.

The spelling of 111747423 in words is "one hundred eleven million, seven hundred forty-seven thousand, four hundred twenty-three".