320144263 has 2 divisors, whose sum is σ = 320144264. Its totient is φ = 320144262.

The previous prime is 320144257. The next prime is 320144309. The reversal of 320144263 is 362441023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320144263 - 2⁹ = 320143751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320144063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160072131 + 160072132.

It is an arithmetic number, because the mean of its divisors is an integer number (160072132).

Almost surely, 2^320144263 is an apocalyptic number.

320144263 is a deficient number, since it is larger than the sum of its proper divisors (1).

320144263 is an equidigital number, since it uses as much as digits as its factorization.

320144263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 320144263 is about 17892.5756390744. The cubic root of 320144263 is about 684.0931491702.

Adding to 320144263 its reverse (362441023), we get a palindrome (682585286).

The spelling of 320144263 in words is "three hundred twenty million, one hundred forty-four thousand, two hundred sixty-three".