320431697 has 8 divisors (see below), whose sum is σ = 322133760. Its totient is φ = 318734560.

The previous prime is 320431669. The next prime is 320431747. The reversal of 320431697 is 796134023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320431697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320431667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222893 + ... + 224325.

It is an arithmetic number, because the mean of its divisors is an integer number (40266720).

Almost surely, 2^320431697 is an apocalyptic number.

It is an amenable number.

320431697 is a deficient number, since it is larger than the sum of its proper divisors (1702063).

320431697 is a wasteful number, since it uses less digits than its factorization.

320431697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 320431697 is about 17900.6060511928. The cubic root of 320431697 is about 684.2978202464.

The spelling of 320431697 in words is "three hundred twenty million, four hundred thirty-one thousand, six hundred ninety-seven".