111145135 has 4 divisors (see below), whose sum is σ = 133374168. Its totient is φ = 88916104.

The previous prime is 111145127. The next prime is 111145157. The reversal of 111145135 is 531541111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531541111 = 22861 ⋅23251.

It is a cyclic number.

It is not a de Polignac number, because 111145135 - 2³ = 111145127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11114509 + ... + 11114518.

It is an arithmetic number, because the mean of its divisors is an integer number (33343542).

Almost surely, 2^111145135 is an apocalyptic number.

111145135 is a deficient number, since it is larger than the sum of its proper divisors (22229033).

111145135 is an equidigital number, since it uses as much as digits as its factorization.

111145135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22229032.

The product of its digits is 300, while the sum is 22.

The square root of 111145135 is about 10542.5393051200. The cubic root of 111145135 is about 480.7989227004.

Adding to 111145135 its reverse (531541111), we get a palindrome (642686246).

The spelling of 111145135 in words is "one hundred eleven million, one hundred forty-five thousand, one hundred thirty-five".