11431223 has 2 divisors, whose sum is σ = 11431224. Its totient is φ = 11431222.

The previous prime is 11431183. The next prime is 11431241. The reversal of 11431223 is 32213411.

It is a strong prime.

It is an emirp because it is prime and its reverse (32213411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11431223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11431243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715611 + 5715612.

It is an arithmetic number, because the mean of its divisors is an integer number (5715612).

Almost surely, 2^11431223 is an apocalyptic number.

11431223 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431223 is an equidigital number, since it uses as much as digits as its factorization.

11431223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 11431223 is about 3381.0091688725. The cubic root of 11431223 is about 225.2669949807.

Adding to 11431223 its reverse (32213411), we get a palindrome (43644634).

The spelling of 11431223 in words is "eleven million, four hundred thirty-one thousand, two hundred twenty-three".