320459691 has 4 divisors (see below), whose sum is σ = 427279592. Its totient is φ = 213639792.

The previous prime is 320459663. The next prime is 320459723. The reversal of 320459691 is 196954023.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 320459691 - 2⁷ = 320459563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320459611) 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, 53409946 + ... + 53409951.

It is an arithmetic number, because the mean of its divisors is an integer number (106819898).

Almost surely, 2^320459691 is an apocalyptic number.

320459691 is a deficient number, since it is larger than the sum of its proper divisors (106819901).

320459691 is a wasteful number, since it uses less digits than its factorization.

320459691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106819900.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 320459691 is about 17901.3879629486. The cubic root of 320459691 is about 684.3177471923.

The spelling of 320459691 in words is "three hundred twenty million, four hundred fifty-nine thousand, six hundred ninety-one".