113112231 has 16 divisors (see below), whose sum is σ = 155840256. Its totient is φ = 72930816.

The previous prime is 113112199. The next prime is 113112283. The reversal of 113112231 is 132211311.

It is a happy number.

It is not a de Polignac number, because 113112231 - 2⁵ = 113112199 is a prime.

It is a super-2 number, since 2×113112231² = 25588753603594722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113112231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113112331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9031 + ... + 17543.

It is an arithmetic number, because the mean of its divisors is an integer number (9740016).

Almost surely, 2^113112231 is an apocalyptic number.

113112231 is a deficient number, since it is larger than the sum of its proper divisors (42728025).

113112231 is a wasteful number, since it uses less digits than its factorization.

113112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662.

The product of its digits is 36, while the sum is 15.

The square root of 113112231 is about 10635.4234048297. The cubic root of 113112231 is about 483.6188159933.

Adding to 113112231 its reverse (132211311), we get a palindrome (245323542).

The spelling of 113112231 in words is "one hundred thirteen million, one hundred twelve thousand, two hundred thirty-one".