320463261 has 6 divisors (see below), whose sum is σ = 462891390. Its totient is φ = 213642168.

The previous prime is 320463259. The next prime is 320463271. The reversal of 320463261 is 162364023.

320463261 is a `hidden beast` number, since 3 + 20 + 4 + 632 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 246176100 + 74287161 = 15690^2 + 8619^2 .

It is not a de Polignac number, because 320463261 - 2¹ = 320463259 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320463251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17803506 + ... + 17803523.

It is an arithmetic number, because the mean of its divisors is an integer number (77148565).

Almost surely, 2^320463261 is an apocalyptic number.

It is an amenable number.

320463261 is a deficient number, since it is larger than the sum of its proper divisors (142428129).

320463261 is a wasteful number, since it uses less digits than its factorization.

320463261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35607035 (or 35607032 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 320463261 is about 17901.4876756095. The cubic root of 320463261 is about 684.3202883391.

The spelling of 320463261 in words is "three hundred twenty million, four hundred sixty-three thousand, two hundred sixty-one".