113443213 has 4 divisors (see below), whose sum is σ = 122169628. Its totient is φ = 104716800.

The previous prime is 113443201. The next prime is 113443217. The reversal of 113443213 is 312344311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40220964 + 73222249 = 6342^2 + 8557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113443213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113443217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4363188 + ... + 4363213.

It is an arithmetic number, because the mean of its divisors is an integer number (30542407).

Almost surely, 2^113443213 is an apocalyptic number.

113443213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

113443213 is a deficient number, since it is larger than the sum of its proper divisors (8726415).

113443213 is an equidigital number, since it uses as much as digits as its factorization.

113443213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726414.

The product of its digits is 864, while the sum is 22.

The square root of 113443213 is about 10650.9723969223. The cubic root of 113443213 is about 484.0900684439.

Adding to 113443213 its reverse (312344311), we get a palindrome (425787524).

The spelling of 113443213 in words is "one hundred thirteen million, four hundred forty-three thousand, two hundred thirteen".