320432255 has 16 divisors (see below), whose sum is σ = 451743264. Its totient is φ = 215114880.

The previous prime is 320432249. The next prime is 320432263. The reversal of 320432255 is 552234023.

It is not a de Polignac number, because 320432255 - 2⁶ = 320432191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223364 + ... + 224793.

It is an arithmetic number, because the mean of its divisors is an integer number (28233954).

Almost surely, 2^320432255 is an apocalyptic number.

320432255 is a deficient number, since it is larger than the sum of its proper divisors (131311009).

320432255 is a wasteful number, since it uses less digits than its factorization.

320432255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448186.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 320432255 is about 17900.6216372505. The cubic root of 320432255 is about 684.2982174584.

Adding to 320432255 its reverse (552234023), we get a palindrome (872666278).

The spelling of 320432255 in words is "three hundred twenty million, four hundred thirty-two thousand, two hundred fifty-five".