320415897 has 4 divisors (see below), whose sum is σ = 427221200. Its totient is φ = 213610596.

The previous prime is 320415889. The next prime is 320415923. The reversal of 320415897 is 798514023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 320415897 - 2³ = 320415889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320415817) 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, 53402647 + ... + 53402652.

It is an arithmetic number, because the mean of its divisors is an integer number (106805300).

Almost surely, 2^320415897 is an apocalyptic number.

It is an amenable number.

320415897 is a deficient number, since it is larger than the sum of its proper divisors (106805303).

320415897 is a wasteful number, since it uses less digits than its factorization.

320415897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106805302.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 320415897 is about 17900.1647199125. The cubic root of 320415897 is about 684.2865728330.

The spelling of 320415897 in words is "three hundred twenty million, four hundred fifteen thousand, eight hundred ninety-seven".