11331213 has 24 divisors (see below), whose sum is σ = 16208640. Its totient is φ = 7032960.

The previous prime is 11331209. The next prime is 11331217. The reversal of 11331213 is 31213311.

11331213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11331209) and next prime (11331217).

It is not a de Polignac number, because 11331213 - 2² = 11331209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11331192 and 11331201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331217) 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 23 ways as a sum of consecutive naturals, for example, 127273 + ... + 127361.

It is an arithmetic number, because the mean of its divisors is an integer number (675360).

Almost surely, 2^11331213 is an apocalyptic number.

It is an amenable number.

11331213 is a deficient number, since it is larger than the sum of its proper divisors (4877427).

11331213 is an equidigital number, since it uses as much as digits as its factorization.

11331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 160 counting only the distinct ones).

The product of its digits is 54, while the sum is 15.

The square root of 11331213 is about 3366.1867149640. The cubic root of 11331213 is about 224.6081277668.

Adding to 11331213 its reverse (31213311), we get a palindrome (42544524).

It can be divided in two parts, 1133 and 1213, that added together give a triangular number (2346 = T₆₈).

The spelling of 11331213 in words is "eleven million, three hundred thirty-one thousand, two hundred thirteen".