11231213 has 8 divisors (see below), whose sum is σ = 13134528. Its totient is φ = 9402624.

The previous prime is 11231201. The next prime is 11231219. The reversal of 11231213 is 31213211.

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

It is not a de Polignac number, because 11231213 - 2¹⁰ = 11230189 is a prime.

It is a super-2 number, since 2×11231213² = 252280290902738, 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 (11231219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18356 + ... + 18957.

It is an arithmetic number, because the mean of its divisors is an integer number (1641816).

Almost surely, 2^11231213 is an apocalyptic number.

It is an amenable number.

11231213 is a deficient number, since it is larger than the sum of its proper divisors (1903315).

11231213 is an equidigital number, since it uses as much as digits as its factorization.

11231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37363.

The product of its digits is 36, while the sum is 14.

The square root of 11231213 is about 3351.3001954465. The cubic root of 11231213 is about 223.9454387201.

Adding to 11231213 its reverse (31213211), we get a palindrome (42444424).

The spelling of 11231213 in words is "eleven million, two hundred thirty-one thousand, two hundred thirteen".