113611231 has 4 divisors (see below), whose sum is σ = 113687352. Its totient is φ = 113535112.

The previous prime is 113611189. The next prime is 113611247. The reversal of 113611231 is 132116311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132116311 = 1297 ⋅101863.

It is a cyclic number.

It is not a de Polignac number, because 113611231 - 2⁷ = 113611103 is a prime.

It is a super-4 number, since 4×113611231⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113611199 and 113611208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113614231) 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, 35776 + ... + 38821.

It is an arithmetic number, because the mean of its divisors is an integer number (28421838).

Almost surely, 2^113611231 is an apocalyptic number.

113611231 is a deficient number, since it is larger than the sum of its proper divisors (76121).

113611231 is an equidigital number, since it uses as much as digits as its factorization.

113611231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76120.

The product of its digits is 108, while the sum is 19.

The square root of 113611231 is about 10658.8569274571. The cubic root of 113611231 is about 484.3289419182.

Adding to 113611231 its reverse (132116311), we get a palindrome (245727542).

The spelling of 113611231 in words is "one hundred thirteen million, six hundred eleven thousand, two hundred thirty-one".