1123320349 has 2 divisors, whose sum is σ = 1123320350. Its totient is φ = 1123320348.

The previous prime is 1123320343. The next prime is 1123320377. The reversal of 1123320349 is 9430233211.

It is an a-pointer prime, because the next prime (1123320377) can be obtained adding 1123320349 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1023680025 + 99640324 = 31995^2 + 9982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123320349 - 2⁷ = 1123320221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123320343) 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, 561660174 + 561660175.

It is an arithmetic number, because the mean of its divisors is an integer number (561660175).

Almost surely, 2^1123320349 is an apocalyptic number.

It is an amenable number.

1123320349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123320349 is an equidigital number, since it uses as much as digits as its factorization.

1123320349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1123320349 is about 33515.9715508890. The cubic root of 1123320349 is about 1039.5240515112.

The spelling of 1123320349 in words is "one billion, one hundred twenty-three million, three hundred twenty thousand, three hundred forty-nine".