11219231 has 2 divisors, whose sum is σ = 11219232. Its totient is φ = 11219230.

The previous prime is 11219209. The next prime is 11219237. The reversal of 11219231 is 13291211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11219231 - 2¹⁸ = 10957087 is a prime.

It is a super-2 number, since 2×11219231² = 251742288462722, which contains 22 as substring.

It is a Chen prime.

It is equal to p₇₄₀₀₄₅ and since 11219231 and 740045 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11219237) 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 as a sum of consecutive naturals, namely, 5609615 + 5609616.

It is an arithmetic number, because the mean of its divisors is an integer number (5609616).

Almost surely, 2^11219231 is an apocalyptic number.

11219231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11219231 is an equidigital number, since it uses as much as digits as its factorization.

11219231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 20.

The square root of 11219231 is about 3349.5120540162. The cubic root of 11219231 is about 223.8657717823.

The spelling of 11219231 in words is "eleven million, two hundred nineteen thousand, two hundred thirty-one".