320232665 has 12 divisors (see below), whose sum is σ = 388110564. Its totient is φ = 253656864.

The previous prime is 320232629. The next prime is 320232713. The reversal of 320232665 is 566232023.

It can be written as a sum of positive squares in 2 ways, for example, as 87853129 + 232379536 = 9373^2 + 15244^2 .

It is not a de Polignac number, because 320232665 - 2¹⁰ = 320231641 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50027 + ... + 56063.

It is an arithmetic number, because the mean of its divisors is an integer number (32342547).

Almost surely, 2^320232665 is an apocalyptic number.

It is an amenable number.

320232665 is a deficient number, since it is larger than the sum of its proper divisors (67877899).

320232665 is an equidigital number, since it uses as much as digits as its factorization.

320232665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248 (or 6145 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 320232665 is about 17895.0458227969. The cubic root of 320232665 is about 684.1561099913.

Adding to 320232665 its reverse (566232023), we get a palindrome (886464688).

The spelling of 320232665 in words is "three hundred twenty million, two hundred thirty-two thousand, six hundred sixty-five".