111423023011 has 4 divisors (see below), whose sum is σ = 111447716872. Its totient is φ = 111398329152.

The previous prime is 111423022981. The next prime is 111423023039. The reversal of 111423023011 is 110320324111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110320324111 = 443 ⋅249030077.

It is a cyclic number.

It is not a de Polignac number, because 111423023011 - 2³⁵ = 77063284643 is a prime.

It is a super-2 number, since 2×111423023011² (a number of 23 digits) contains 22 as substring.

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 111423023011.

It is not an unprimeable number, because it can be changed into a prime (111423023051) 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, 12340161 + ... + 12349186.

It is an arithmetic number, because the mean of its divisors is an integer number (27861929218).

Almost surely, 2^111423023011 is an apocalyptic number.

111423023011 is a deficient number, since it is larger than the sum of its proper divisors (24693861).

111423023011 is an equidigital number, since it uses as much as digits as its factorization.

111423023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24693860.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111423023011 its reverse (110320324111), we get a palindrome (221743347122).

The spelling of 111423023011 in words is "one hundred eleven billion, four hundred twenty-three million, twenty-three thousand, eleven".