1113213 has 4 divisors (see below), whose sum is σ = 1484288. Its totient is φ = 742140.

The previous prime is 1113199. The next prime is 1113221. The reversal of 1113213 is 3123111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1113213 - 2⁴ = 1113197 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185533 + ... + 185538.

It is an arithmetic number, because the mean of its divisors is an integer number (371072).

2^1113213 is an apocalyptic number.

It is an amenable number.

1113213 is a deficient number, since it is larger than the sum of its proper divisors (371075).

1113213 is an equidigital number, since it uses as much as digits as its factorization.

1113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371074.

The product of its digits is 18, while the sum is 12.

The square root of 1113213 is about 1055.0890957640. The cubic root of 1113213 is about 103.6396863005.

Adding to 1113213 its reverse (3123111), we get a palindrome (4236324).

It can be divided in two parts, 1113 and 213, that added together give a triangular number (1326 = T₅₁).

The spelling of 1113213 in words is "one million, one hundred thirteen thousand, two hundred thirteen".