113031231 has 8 divisors (see below), whose sum is σ = 153179184. Its totient is φ = 74118720.

The previous prime is 113031227. The next prime is 113031253. The reversal of 113031231 is 132130311.

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

It is not a de Polignac number, because 113031231 - 2² = 113031227 is a prime.

It is a super-2 number, since 2×113031231² = 25552118362750722, 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 113031231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113031031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308646 + ... + 309011.

It is an arithmetic number, because the mean of its divisors is an integer number (19147398).

Almost surely, 2^113031231 is an apocalyptic number.

113031231 is a deficient number, since it is larger than the sum of its proper divisors (40147953).

113031231 is an equidigital number, since it uses as much as digits as its factorization.

113031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617721.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 113031231 is about 10631.6146939211. The cubic root of 113031231 is about 483.5033481430.

Adding to 113031231 its reverse (132130311), we get a palindrome (245161542).

The spelling of 113031231 in words is "one hundred thirteen million, thirty-one thousand, two hundred thirty-one".