320245087 has 4 divisors (see below), whose sum is σ = 324632080. Its totient is φ = 315858096.

The previous prime is 320245063. The next prime is 320245091. The reversal of 320245087 is 780542023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780542023 = 331 ⋅2358133.

It is a cyclic number.

It is not a de Polignac number, because 320245087 - 2¹¹ = 320243039 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 (320245787) 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, 2193387 + ... + 2193532.

It is an arithmetic number, because the mean of its divisors is an integer number (81158020).

Almost surely, 2^320245087 is an apocalyptic number.

320245087 is a deficient number, since it is larger than the sum of its proper divisors (4386993).

320245087 is an equidigital number, since it uses as much as digits as its factorization.

320245087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4386992.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 320245087 is about 17895.3928987323. The cubic root of 320245087 is about 684.1649561400.

The spelling of 320245087 in words is "three hundred twenty million, two hundred forty-five thousand, eighty-seven".