1320434403 has 8 divisors (see below), whose sum is σ = 1798038528. Its totient is φ = 861559944.

The previous prime is 1320434377. The next prime is 1320434417. The reversal of 1320434403 is 3044340231.

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

It is not a de Polignac number, because 1320434403 - 2⁵ = 1320434371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320434483) 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, 4682251 + ... + 4682532.

It is an arithmetic number, because the mean of its divisors is an integer number (224754816).

Almost surely, 2^1320434403 is an apocalyptic number.

1320434403 is a deficient number, since it is larger than the sum of its proper divisors (477604125).

1320434403 is an equidigital number, since it uses as much as digits as its factorization.

1320434403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9364833.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1320434403 is about 36337.7820319292. The cubic root of 1320434403 is about 1097.0816314512.

Adding to 1320434403 its reverse (3044340231), we get a palindrome (4364774634).

The spelling of 1320434403 in words is "one billion, three hundred twenty million, four hundred thirty-four thousand, four hundred three".