320364145 has 4 divisors (see below), whose sum is σ = 384436980. Its totient is φ = 256291312.

The previous prime is 320364067. The next prime is 320364151. The reversal of 320364145 is 541463023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541463023 = 61 ⋅8876443.

It can be written as a sum of positive squares in 2 ways, for example, as 232135696 + 88228449 = 15236^2 + 9393^2 .

It is a cyclic number.

It is not a de Polignac number, because 320364145 - 2⁹ = 320363633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32036410 + ... + 32036419.

It is an arithmetic number, because the mean of its divisors is an integer number (96109245).

Almost surely, 2^320364145 is an apocalyptic number.

It is an amenable number.

320364145 is a deficient number, since it is larger than the sum of its proper divisors (64072835).

320364145 is an equidigital number, since it uses as much as digits as its factorization.

320364145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64072834.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 320364145 is about 17898.7190882476. The cubic root of 320364145 is about 684.2497299820.

The spelling of 320364145 in words is "three hundred twenty million, three hundred sixty-four thousand, one hundred forty-five".