1121344423 has 2 divisors, whose sum is σ = 1121344424. Its totient is φ = 1121344422.

The previous prime is 1121344409. The next prime is 1121344447. The reversal of 1121344423 is 3244431211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121344423 - 2⁵ = 1121344391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121344453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560672211 + 560672212.

It is an arithmetic number, because the mean of its divisors is an integer number (560672212).

Almost surely, 2^1121344423 is an apocalyptic number.

1121344423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121344423 is an equidigital number, since it uses as much as digits as its factorization.

1121344423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 1121344423 is about 33486.4811976415. The cubic root of 1121344423 is about 1038.9141844843.

Adding to 1121344423 its reverse (3244431211), we get a palindrome (4365775634).

The spelling of 1121344423 in words is "one billion, one hundred twenty-one million, three hundred forty-four thousand, four hundred twenty-three".