1200343403 has 8 divisors (see below), whose sum is σ = 1373241600. Its totient is φ = 1027800360.

The previous prime is 1200343393. The next prime is 1200343423. The reversal of 1200343403 is 3043430021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200343403 - 2¹⁰ = 1200342379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200343423) 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 7 ways as a sum of consecutive naturals, for example, 81503 + ... + 95096.

It is an arithmetic number, because the mean of its divisors is an integer number (171655200).

Almost surely, 2^1200343403 is an apocalyptic number.

1200343403 is a deficient number, since it is larger than the sum of its proper divisors (172898197).

1200343403 is an equidigital number, since it uses as much as digits as its factorization.

1200343403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177577.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1200343403 is about 34645.9723921843. The cubic root of 1200343403 is about 1062.7599262205.

Adding to 1200343403 its reverse (3043430021), we get a palindrome (4243773424).

The spelling of 1200343403 in words is "one billion, two hundred million, three hundred forty-three thousand, four hundred three".