113212231 has 8 divisors (see below), whose sum is σ = 130769424. Its totient is φ = 96865920.

The previous prime is 113212219. The next prime is 113212247. The reversal of 113212231 is 132212311.

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

It is a cyclic number.

It is not a de Polignac number, because 113212231 - 2⁵ = 113212199 is a prime.

It is a super-2 number, since 2×113212231² = 25634018495994722, 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 (113212291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302520 + ... + 302893.

It is an arithmetic number, because the mean of its divisors is an integer number (16346178).

Almost surely, 2^113212231 is an apocalyptic number.

113212231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113212231 is a deficient number, since it is larger than the sum of its proper divisors (17557193).

113212231 is a wasteful number, since it uses less digits than its factorization.

113212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605441.

The product of its digits is 72, while the sum is 16.

The square root of 113212231 is about 10640.1236364997. The cubic root of 113212231 is about 483.7612928834.

Adding to 113212231 its reverse (132212311), we get a palindrome (245424542).

The spelling of 113212231 in words is "one hundred thirteen million, two hundred twelve thousand, two hundred thirty-one".