320542297 has 4 divisors (see below), whose sum is σ = 320983936. Its totient is φ = 320100660.

The previous prime is 320542289. The next prime is 320542301. The reversal of 320542297 is 792245023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 792245023 = 173 ⋅4579451.

It is a cyclic number.

It is not a de Polignac number, because 320542297 - 2³ = 320542289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320542097) 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, 219729 + ... + 221182.

It is an arithmetic number, because the mean of its divisors is an integer number (80245984).

Almost surely, 2^320542297 is an apocalyptic number.

It is an amenable number.

320542297 is a deficient number, since it is larger than the sum of its proper divisors (441639).

320542297 is an equidigital number, since it uses as much as digits as its factorization.

320542297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441638.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 320542297 is about 17903.6950655444. The cubic root of 320542297 is about 684.3765417895.

The spelling of 320542297 in words is "three hundred twenty million, five hundred forty-two thousand, two hundred ninety-seven".