111402403023 has 4 divisors (see below), whose sum is σ = 148536537368. Its totient is φ = 74268268680.

The previous prime is 111402403003. The next prime is 111402403031. The reversal of 111402403023 is 320304204111.

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

It is not a de Polignac number, because 111402403023 - 2¹⁷ = 111402271951 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 (111402403003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18567067168 + ... + 18567067173.

It is an arithmetic number, because the mean of its divisors is an integer number (37134134342).

Almost surely, 2^111402403023 is an apocalyptic number.

111402403023 is a deficient number, since it is larger than the sum of its proper divisors (37134134345).

111402403023 is an equidigital number, since it uses as much as digits as its factorization.

111402403023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37134134344.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 111402403023 its reverse (320304204111), we get a palindrome (431706607134).

The spelling of 111402403023 in words is "one hundred eleven billion, four hundred two million, four hundred three thousand, twenty-three".