320163461 has 2 divisors, whose sum is σ = 320163462. Its totient is φ = 320163460.

The previous prime is 320163457. The next prime is 320163463. The reversal of 320163461 is 164361023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253414561 + 66748900 = 15919^2 + 8170^2 .

It is a cyclic number.

It is not a de Polignac number, because 320163461 - 2² = 320163457 is a prime.

Together with 320163463, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320163461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320163463) 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 as a sum of consecutive naturals, namely, 160081730 + 160081731.

It is an arithmetic number, because the mean of its divisors is an integer number (160081731).

Almost surely, 2^320163461 is an apocalyptic number.

It is an amenable number.

320163461 is a deficient number, since it is larger than the sum of its proper divisors (1).

320163461 is an equidigital number, since it uses as much as digits as its factorization.

320163461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 320163461 is about 17893.1121105301. The cubic root of 320163461 is about 684.1068231700.

The spelling of 320163461 in words is "three hundred twenty million, one hundred sixty-three thousand, four hundred sixty-one".