113442231 has 8 divisors (see below), whose sum is σ = 172864384. Its totient is φ = 64824120.

The previous prime is 113442227. The next prime is 113442247. The reversal of 113442231 is 132244311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113442231 - 2² = 113442227 is a prime.

It is a super-2 number, since 2×113442231² = 25738279548514722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5402011 = 113442231 / (1 + 1 + 3 + 4 + 4 + 2 + 2 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 113442198 and 113442207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113442221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700985 + ... + 2701026.

It is an arithmetic number, because the mean of its divisors is an integer number (21608048).

Almost surely, 2^113442231 is an apocalyptic number.

113442231 is a deficient number, since it is larger than the sum of its proper divisors (59422153).

113442231 is an equidigital number, since it uses as much as digits as its factorization.

113442231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402021.

The product of its digits is 576, while the sum is 21.

The square root of 113442231 is about 10650.9262977452. The cubic root of 113442231 is about 484.0886716281.

Adding to 113442231 its reverse (132244311), we get a palindrome (245686542).

It can be divided in two parts, 1134 and 42231, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 113442231 in words is "one hundred thirteen million, four hundred forty-two thousand, two hundred thirty-one".