1109231 has 2 divisors, whose sum is σ = 1109232. Its totient is φ = 1109230.

The previous prime is 1109219. The next prime is 1109243. The reversal of 1109231 is 1329011.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1109219) and next prime (1109243).

It is an emirp because it is prime and its reverse (1329011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1109231 - 2⁶ = 1109167 is a prime.

It is a super-2 number, since 2×1109231² = 2460786822722, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109281) 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, 554615 + 554616.

It is an arithmetic number, because the mean of its divisors is an integer number (554616).

2^1109231 is an apocalyptic number.

1109231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109231 is an equidigital number, since it uses as much as digits as its factorization.

1109231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1109231 is about 1053.2003608051. The cubic root of 1109231 is about 103.5159644600.

The spelling of 1109231 in words is "one million, one hundred nine thousand, two hundred thirty-one".