320342303 has 4 divisors (see below), whose sum is σ = 327792168. Its totient is φ = 312892440.

The previous prime is 320342249. The next prime is 320342327. The reversal of 320342303 is 303243023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303243023 = 31 ⋅9782033.

It is a cyclic number.

It is not a de Polignac number, because 320342303 - 2⁸ = 320342047 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 (320342333) 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, 3724868 + ... + 3724953.

It is an arithmetic number, because the mean of its divisors is an integer number (81948042).

Almost surely, 2^320342303 is an apocalyptic number.

320342303 is a deficient number, since it is larger than the sum of its proper divisors (7449865).

320342303 is an equidigital number, since it uses as much as digits as its factorization.

320342303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449864.

The product of its (nonzero) digits is 1296, while the sum is 20.

The square root of 320342303 is about 17898.1089224532. The cubic root of 320342303 is about 684.2341792173.

Adding to 320342303 its reverse (303243023), we get a palindrome (623585326).

The spelling of 320342303 in words is "three hundred twenty million, three hundred forty-two thousand, three hundred three".