1121340343 has 4 divisors (see below), whose sum is σ = 1121549688. Its totient is φ = 1121131000.

The previous prime is 1121340331. The next prime is 1121340403. The reversal of 1121340343 is 3430431211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3430431211 = 58453 ⋅58687.

It is a cyclic number.

It is not a de Polignac number, because 1121340343 - 2⁹ = 1121339831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121340313) 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 in 3 ways as a sum of consecutive naturals, for example, 96421 + ... + 107422.

It is an arithmetic number, because the mean of its divisors is an integer number (280387422).

Almost surely, 2^1121340343 is an apocalyptic number.

1121340343 is a deficient number, since it is larger than the sum of its proper divisors (209345).

1121340343 is an equidigital number, since it uses as much as digits as its factorization.

1121340343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209344.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1121340343 is about 33486.4202774796. The cubic root of 1121340343 is about 1038.9129244566.

Adding to 1121340343 its reverse (3430431211), we get a palindrome (4551771554).

The spelling of 1121340343 in words is "one billion, one hundred twenty-one million, three hundred forty thousand, three hundred forty-three".