320505341 has 4 divisors (see below), whose sum is σ = 345159612. Its totient is φ = 295851072.

The previous prime is 320505337. The next prime is 320505349. The reversal of 320505341 is 143505023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17397241 + 303108100 = 4171^2 + 17410^2 .

It is a cyclic number.

It is not a de Polignac number, because 320505341 - 2² = 320505337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320505349) 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, 12327116 + ... + 12327141.

It is an arithmetic number, because the mean of its divisors is an integer number (86289903).

Almost surely, 2^320505341 is an apocalyptic number.

It is an amenable number.

320505341 is a deficient number, since it is larger than the sum of its proper divisors (24654271).

320505341 is a wasteful number, since it uses less digits than its factorization.

320505341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24654270.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 320505341 is about 17902.6629583423. The cubic root of 320505341 is about 684.3502397052.

The spelling of 320505341 in words is "three hundred twenty million, five hundred five thousand, three hundred forty-one".