113312231 has 4 divisors (see below), whose sum is σ = 113502000. Its totient is φ = 113122464.

The previous prime is 113312201. The next prime is 113312261. The reversal of 113312231 is 132213311.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (113312201) and next prime (113312261).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113312231 is a prime.

It is a super-2 number, since 2×113312231² = 25679323388394722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113312201) 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, 93986 + ... + 95183.

It is an arithmetic number, because the mean of its divisors is an integer number (28375500).

Almost surely, 2^113312231 is an apocalyptic number.

113312231 is a deficient number, since it is larger than the sum of its proper divisors (189769).

113312231 is an equidigital number, since it uses as much as digits as its factorization.

113312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189768.

The product of its digits is 108, while the sum is 17.

The square root of 113312231 is about 10644.8217927779. The cubic root of 113312231 is about 483.9036858985.

Adding to 113312231 its reverse (132213311), we get a palindrome (245525542).

The spelling of 113312231 in words is "one hundred thirteen million, three hundred twelve thousand, two hundred thirty-one".