111325513 has 4 divisors (see below), whose sum is σ = 119889028. Its totient is φ = 102762000.

The previous prime is 111325481. The next prime is 111325523. The reversal of 111325513 is 315523111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315523111 = 17 ⋅18560183.

It can be written as a sum of positive squares in 2 ways, for example, as 75481344 + 35844169 = 8688^2 + 5987^2 .

It is a cyclic number.

It is not a de Polignac number, because 111325513 - 2⁵ = 111325481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111325523) 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, 4281738 + ... + 4281763.

It is an arithmetic number, because the mean of its divisors is an integer number (29972257).

Almost surely, 2^111325513 is an apocalyptic number.

111325513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111325513 is a deficient number, since it is larger than the sum of its proper divisors (8563515).

111325513 is an equidigital number, since it uses as much as digits as its factorization.

111325513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563514.

The product of its digits is 450, while the sum is 22.

The square root of 111325513 is about 10551.0906071363. The cubic root of 111325513 is about 481.0588791215.

Adding to 111325513 its reverse (315523111), we get a palindrome (426848624).

The spelling of 111325513 in words is "one hundred eleven million, three hundred twenty-five thousand, five hundred thirteen".