320432003 has 4 divisors (see below), whose sum is σ = 320495928. Its totient is φ = 320368080.

The previous prime is 320431999. The next prime is 320432023. The reversal of 320432003 is 300234023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300234023 = 139 ⋅2159957.

It is a cyclic number.

It is not a de Polignac number, because 320432003 - 2² = 320431999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320432023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23738 + ... + 34703.

It is an arithmetic number, because the mean of its divisors is an integer number (80123982).

Almost surely, 2^320432003 is an apocalyptic number.

320432003 is a deficient number, since it is larger than the sum of its proper divisors (63925).

320432003 is an equidigital number, since it uses as much as digits as its factorization.

320432003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63924.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 320432003 is about 17900.6145983874. The cubic root of 320432003 is about 684.2980380724.

Adding to 320432003 its reverse (300234023), we get a palindrome (620666026).

The spelling of 320432003 in words is "three hundred twenty million, four hundred thirty-two thousand, three".