320871284 has 6 divisors (see below), whose sum is σ = 561524754. Its totient is φ = 160435640.

The previous prime is 320871263. The next prime is 320871293. The reversal of 320871284 is 482178023.

It can be written as a sum of positive squares in only one way, i.e., 199430884 + 121440400 = 14122^2 + 11020^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40108907 + ... + 40108914.

It is an arithmetic number, because the mean of its divisors is an integer number (93587459).

Almost surely, 2^320871284 is an apocalyptic number.

It is an amenable number.

320871284 is a deficient number, since it is larger than the sum of its proper divisors (240653470).

320871284 is a wasteful number, since it uses less digits than its factorization.

320871284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80217825 (or 80217823 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 320871284 is about 17912.8803937279. The cubic root of 320871284 is about 684.6105972260.

The spelling of 320871284 in words is "three hundred twenty million, eight hundred seventy-one thousand, two hundred eighty-four".