113213231 has 8 divisors (see below), whose sum is σ = 114667584. Its totient is φ = 111767040.

The previous prime is 113213227. The next prime is 113213239. The reversal of 113213231 is 132312311.

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 113213231 - 2² = 113213227 is a prime.

It is a super-2 number, since 2×113213231² = 25634471346918722, 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 (113213239) 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, 28775 + ... + 32471.

It is an arithmetic number, because the mean of its divisors is an integer number (14333448).

Almost surely, 2^113213231 is an apocalyptic number.

113213231 is a deficient number, since it is larger than the sum of its proper divisors (1454353).

113213231 is a wasteful number, since it uses less digits than its factorization.

113213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081.

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

The square root of 113213231 is about 10640.1706283311. The cubic root of 113213231 is about 483.7627172285.

Adding to 113213231 its reverse (132312311), we get a palindrome (245525542).

The spelling of 113213231 in words is "one hundred thirteen million, two hundred thirteen thousand, two hundred thirty-one".