320351697 has 12 divisors (see below), whose sum is σ = 468306384. Its totient is φ = 210994200.

The previous prime is 320351693. The next prime is 320351711. The reversal of 320351697 is 796153023.

It is not a de Polignac number, because 320351697 - 2² = 320351693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320351693) 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 11 ways as a sum of consecutive naturals, for example, 213679 + ... + 215172.

It is an arithmetic number, because the mean of its divisors is an integer number (39025532).

Almost surely, 2^320351697 is an apocalyptic number.

It is an amenable number.

320351697 is a deficient number, since it is larger than the sum of its proper divisors (147954687).

320351697 is a wasteful number, since it uses less digits than its factorization.

320351697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428940 (or 428937 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 320351697 is about 17898.3713504888. The cubic root of 320351697 is about 684.2408675139.

The spelling of 320351697 in words is "three hundred twenty million, three hundred fifty-one thousand, six hundred ninety-seven".