111311375 has 32 divisors (see below), whose sum is σ = 165694464. Its totient is φ = 72996000.

The previous prime is 111311371. The next prime is 111311377. The reversal of 111311375 is 573113111.

It is a happy number.

It is not a de Polignac number, because 111311375 - 2² = 111311371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 111311375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17360 + ... + 22890.

It is an arithmetic number, because the mean of its divisors is an integer number (5177952).

Almost surely, 2^111311375 is an apocalyptic number.

111311375 is a deficient number, since it is larger than the sum of its proper divisors (54383089).

111311375 is an equidigital number, since it uses as much as digits as its factorization.

111311375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576 (or 5566 counting only the distinct ones).

The product of its digits is 315, while the sum is 23.

The square root of 111311375 is about 10550.4206077293. The cubic root of 111311375 is about 481.0385139234.

Adding to 111311375 its reverse (573113111), we get a palindrome (684424486).

The spelling of 111311375 in words is "one hundred eleven million, three hundred eleven thousand, three hundred seventy-five".