111134213 has 4 divisors (see below), whose sum is σ = 111391308. Its totient is φ = 110877120.

The previous prime is 111134209. The next prime is 111134237. The reversal of 111134213 is 312431111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312431111 = 41 ⋅7620271.

It can be written as a sum of positive squares in 2 ways, for example, as 68923204 + 42211009 = 8302^2 + 6497^2 .

It is a cyclic number.

It is not a de Polignac number, because 111134213 - 2² = 111134209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111134191 and 111134200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111134203) 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, 127898 + ... + 128763.

It is an arithmetic number, because the mean of its divisors is an integer number (27847827).

Almost surely, 2^111134213 is an apocalyptic number.

It is an amenable number.

111134213 is a deficient number, since it is larger than the sum of its proper divisors (257095).

111134213 is an equidigital number, since it uses as much as digits as its factorization.

111134213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257094.

The product of its digits is 72, while the sum is 17.

The square root of 111134213 is about 10542.0212957478. The cubic root of 111134213 is about 480.7831731496.

Adding to 111134213 its reverse (312431111), we get a palindrome (423565324).

The spelling of 111134213 in words is "one hundred eleven million, one hundred thirty-four thousand, two hundred thirteen".