320838345 has 24 divisors (see below), whose sum is σ = 565241352. Its totient is φ = 168307200.

The previous prime is 320838341. The next prime is 320838367. The reversal of 320838345 is 543838023.

It can be written as a sum of positive squares in 4 ways, for example, as 23068809 + 297769536 = 4803^2 + 17256^2 .

It is not a de Polignac number, because 320838345 - 2² = 320838341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320838341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55696 + ... + 61185.

It is an arithmetic number, because the mean of its divisors is an integer number (23551723).

Almost surely, 2^320838345 is an apocalyptic number.

It is an amenable number.

320838345 is a deficient number, since it is larger than the sum of its proper divisors (244403007).

320838345 is a wasteful number, since it uses less digits than its factorization.

320838345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116953 (or 116950 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 320838345 is about 17911.9609479253. The cubic root of 320838345 is about 684.5871702204.

The spelling of 320838345 in words is "three hundred twenty million, eight hundred thirty-eight thousand, three hundred forty-five".