320243368 has 8 divisors (see below), whose sum is σ = 600456330. Its totient is φ = 160121680.

The previous prime is 320243311. The next prime is 320243369. The reversal of 320243368 is 863342023.

It can be written as a sum of positive squares in only one way, i.e., 317481124 + 2762244 = 17818^2 + 1662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (320243369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015203 + ... + 20015218.

Almost surely, 2^320243368 is an apocalyptic number.

It is an amenable number.

320243368 is a deficient number, since it is larger than the sum of its proper divisors (280212962).

320243368 is a wasteful number, since it uses less digits than its factorization.

320243368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40030427 (or 40030423 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 320243368 is about 17895.3448695464. The cubic root of 320243368 is about 684.1637319925.

The spelling of 320243368 in words is "three hundred twenty million, two hundred forty-three thousand, three hundred sixty-eight".