320201287 has 8 divisors (see below), whose sum is σ = 370957856. Its totient is φ = 270698112.

The previous prime is 320201269. The next prime is 320201303. The reversal of 320201287 is 782102023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320201287 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 (320201237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312798 + ... + 313819.

It is an arithmetic number, because the mean of its divisors is an integer number (46369732).

Almost surely, 2^320201287 is an apocalyptic number.

320201287 is a deficient number, since it is larger than the sum of its proper divisors (50756569).

320201287 is an equidigital number, since it uses as much as digits as its factorization.

320201287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626697.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 320201287 is about 17894.1690782221. The cubic root of 320201287 is about 684.1337635810.

The spelling of 320201287 in words is "three hundred twenty million, two hundred one thousand, two hundred eighty-seven".