111440624423 has 4 divisors (see below), whose sum is σ = 113543277768. Its totient is φ = 109337971080.

The previous prime is 111440624371. The next prime is 111440624431. The reversal of 111440624423 is 324426044111.

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 111440624423 - 2¹² = 111440620327 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 111440624423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111440624023) 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, 1051326593 + ... + 1051326698.

It is an arithmetic number, because the mean of its divisors is an integer number (28385819442).

Almost surely, 2^111440624423 is an apocalyptic number.

111440624423 is a deficient number, since it is larger than the sum of its proper divisors (2102653345).

111440624423 is an equidigital number, since it uses as much as digits as its factorization.

111440624423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102653344.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 111440624423 its reverse (324426044111), we get a palindrome (435866668534).

The spelling of 111440624423 in words is "one hundred eleven billion, four hundred forty million, six hundred twenty-four thousand, four hundred twenty-three".