320397495 has 32 divisors (see below), whose sum is σ = 560321280. Its totient is φ = 155043840.

The previous prime is 320397491. The next prime is 320397503. The reversal of 320397495 is 594793023.

It is not a de Polignac number, because 320397495 - 2² = 320397491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320397491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100567 + ... + 103703.

It is an arithmetic number, because the mean of its divisors is an integer number (17510040).

Almost surely, 2^320397495 is an apocalyptic number.

320397495 is a deficient number, since it is larger than the sum of its proper divisors (239923785).

320397495 is a wasteful number, since it uses less digits than its factorization.

320397495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 320397495 is about 17899.6506949158. The cubic root of 320397495 is about 684.2734726896.

The spelling of 320397495 in words is "three hundred twenty million, three hundred ninety-seven thousand, four hundred ninety-five".